"Those guys are a bunch of douche bags, with their collars popped and their self tan makeup on. No girl is going to fall for those faggots. I bet they were out in the parking lot before they came in here, drawing up their plans of attack for tonight on their douche-a-sketch."
These mythical worm like creatures are said to live off bacteria that forms in old bottles of douche. Upon use they can travel into the woman's vagina and take up residence, much like an STD.
Jason: Hey Sally; have you ever consider checking your vagina for douche worms?
Sally: Douche worms, in my vagina?
Jason: Yeah, it's more likely than you think!
Sally: They're in me. I can feel it... I used an old bottle of douche last week, and I have been wondering where that tingling sensation has been coming from.