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.
Person 1: You just locked me out of the house!
Person 2: Haha, I know!
Person 1: I'm gonna have to kick you in the penis because you're a doucheformer.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.