Gay people are all interested in fashion (which will help them for their future career as a fashion designer), love Kylie Minogue and Madonna, all participate in anal sex - particularly if it's a random stranger in a field or in an alleyway, all frequent gay bars and isolate themselves from straight people, all wear excessively tight clothing at the expense of comfort, all wear glitter when they go out on some part of their body, all love Will & Grace and certainly none of them believe in god because religion hates them.
Not one thing above applies to all gay people, in fact, 90% of them I would imagine doesn't even apply to the majority. I bet you've all thought at least one of them though.