The go-go bar is an institution of Bangkok's "naughty nightlife". In a typical go-go, several dozen dancers in bikinis (or less) crowd the stage, shuffling back and forth to loud music and trying to catch the eye of punters in the audience. Some (but not all) also put on shows where girls perform on stage, but these are generally tamer than you'd expect — nudity, for example, is technically forbidden. In a beer bar, there are no stages and the girls are wearing street clothes.

If this sounds like a thinly veiled veneer for prostitution, it is. Though some point to the large number of American GIs during the Vietnam War as the point of origin of the Thai sex trade, others have claimed that Thai lax attitudes towards sexuality have deeper roots in Thai history. Both Go-go and Beer Bars are squarely aimed at the farang and it's fairly safe to assume that all Thais in them are on the take. That said, it's perfectly OK to check out these shows without actually partaking, and there are more and more curious couples and even the occasional tour group attending. The main areas are around Patpong, Nana Entertainment Plaza and Soi Cowboy.

Behaving while misbehavin'

Some simple rules of etiquette to follow in a go-go bar:

A drink in your hand is required at all times. Most places charge around 100 baht for most drinks.

Lady drinks cost a little more and earn you the privilege of chatting with the lady of your choice for a while.
 
Taking a dancer out of her place of employment before closing time will cost you a bar fine of around 500 baht. This is the bar's share, the rest is up to you two.

No photos inside. If you're lucky, you'll merely have your camera confiscated, but you also stand a fair chance of getting beaten up for your trouble.

Look, but don't touch (unless invited to). Getting too frisky will get you kicked out.

Bring along your passport. Police raids are not uncommon and you're off to the brig for the night if you can't produce one on demand.

Gay Nightlife

Thais are generally accepting of homosexuality and Bangkok has a very active gay nightlife scene, concentrated in Silom Sois 2 & 4 and a short strip of gay go-gos bars off nearby Th Surawong. Most of these bars, however, are aimed at gay men and the lesbian scene is much more low-key. However, there are two full-time lesbian bars (Zeta and Shela) and one Saturday-night only (Lesla) lesbian bar in Bangkok. The most popular gay bars are Balcony and Telephone bar at Silom soi 4 and for the disco club is DJ Station which located at Silom soi 2 (crowded everynight from 11 p.m.). Bring along your passport for entrance age checking (they do not allow people under 20 years old). Closing time is 2-3 a.m.

In a league of their own are Bangkok's numerous transsexuals (kathoey), both pre- and post-operative, popularly known as ladyboys. Some work in the famed transvestite cabarets and there are some dedicated kathoey bars as well, but most do their best to blend in and many have the art of deception down pat. Telltale signs to look out for include tall height, large hands and an Adam's apple.

Note that some Thai regulars in the gay nightlife scene skirt the fine line between partying and prostitution, and the Western visitor, being considered richer, is expected to pay any food and drink expenses and perhaps provide some "taxi money" in the morning. It's usually wise to ask a boy you pick up in a bar or club if he is after money, as it's not uncommon for them to start demanding money after sex.