Adopt a bizarre twitch (e.g. flicking your head irregularly, twitching with eye or busting out sporadic cough noises) and try it out when you go shopping.

When: October or November, Where: India 

One of the biggest festivals of Hindus, Deepawali or Diwali in India is celebrated with lots of enthusiasm and happiness. This festival is celebrated for five continuous days, with the third day being celebrated as the main Diwali or as 'Festival of Lights'. Fireworks are always associated with this festival. The day is celebrated with people lighting diyas, candles all around their house. Lakshmi Puja is performed in the evening to seek divine blessings of Goddess of Wealth. Diwali gifts are exchanged among all near and dear ones.

http://en.wikipedia.org/wiki/Diwali 

When: Easter Where: Antigua, Guatemala 

During Holly Week, Antigua Guatemala hosts the most beautiful religious celebration in the America, when huge processions wind their way through the town’s streets. Actually, the celebration begins on Ash Wednesday, the first day of Lent, and reaches its climax on Good Friday, when Antigua streets are thronged with processions and reverent spectator. The processions consist of big floats, or 'andas', bearing statues of Christ with a cross, that are carried by hundreds of purple-robed men.

A float with the Virgin Mary Follows by women dressed in black clothing. The processions move slowly through. Antigua cobblestone streets, the feet of the bearers cushioned in the sawdust carpets, which are destroyed as the procession passes over. Visiting Antigua during lent and Holly Week means an extraordinary spiritual rewarding experience which you will never forget.

Antigua Guatemala is famous for its spectacular and elaborate religious festivities during Easter Week (Holy Week - Semana Santa). But lets not forget the Carpets tradition (Alfombras de Acerrin), national and international visitors crowd streets not just to see the processions, but also to participate in the detalied elaboration of these colorful carpets to adorn the processional route.

 http://www.aroundantigua.com/culture/easter.htm

Stonehenge is a prehistoric monument located in the English county of Wiltshire, about 3.2 kilometres (2.0 mi) west of Amesbury and 13 kilometres (8.1 mi) north of Salisbury. One of the most famous sites in the world, Stonehenge is composed of earthworks surrounding a circular setting of large standing stones and sits at the centre of the densest complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds. Archaeologists had believed that the iconic stone monument was erected around 2500 BC, as described in the chronology below. However one recent theory has suggested that the first stones were not erected until 2400-2200 BC, whilst another suggests that bluestones may have been erected at the site as early as 3000 BC. The surrounding circular earth bank and ditch, which constitute the earliest phase of the monument, have been dated to about 3100 BC. The site and its surroundings were added to the UNESCO's list of World Heritage Sites in 1986 in a co-listing with Avebury henge monument, and it is also a legally protected Scheduled Ancient Monument. Stonehenge itself is owned by the Crown and managed by English Heritage while the surrounding land is owned by the National Trust.

The Taj Mahal is a mausoleum located in Agra, India, built by Mughal Emperor Shah Jahan in memory of his favorite wife, Mumtaz Mahal.

The Taj Mahal (also "the Taj") is considered the finest example of Mughal architecture, a style that combines elements from Persian, Ottoman, Indian, and Islamic architectural styles. In 1983, the Taj Mahal became a UNESCO World Heritage Site and was cited as "the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage."

While the white domed marble mausoleum is its most familiar component, the Taj Mahal is actually an integrated complex of structures. Building began around 1632 and was completed around 1653, and employed thousands of artisans and craftsmen. The Persianarchitect, Ustad Ahmad Lahauri is generally considered to be the principal designer of the Taj Mahal

When: Early January Where: New Orleans 

Mardi Gras (Fat Tuesday) in New Orleans, Louisiana, is one of the most famous Carnival celebrations in the world.

The New Orleans Carnival season, with roots in preparing for the start of the Catholic season of Lent, starts on Twelfth Night (January 6). It is a season of parades, balls (some of them masquerade balls), and king cake parties. It has traditionally been part of the winter social season, at one time closely related to "coming out" parties for young women at débutante balls.

When: August Where: Zurich, Switzerland 

The Street Parade is the second most attended technoparade in Europe. It takes place in Zurich, Switzerland. Comparable to Berlin's Love Parade, the Street Parade is as of 2004 one of the largest techno parties in the world and the largest annual event in Zurich. Proceeding along the side of Lake Zurich, it normally occurs on the second Saturday in August.