Nightclubs, bars and pubs believe that a single male or female creates a lot of nuisance. Also, a small risk is involved in some kind of nightclubs going alone. So it is always recommended to go along in a group. read more
For example, almost all nightclubs in Delhi have free entry for girls (understandable, though ugly chicks do get through!), charge for couples (ok, I mean I can pay up in this case) and double charge (what the fuck!) or even no-entry for lone guys. read more