When someone you know thinks you want to to have sex with a guy.
Devin: Yeah, Sarah, just admit it, I know you like him.
Sarah: No, I don't!
Devin: Yeah, you do. You want him in your pants.
Sarah: Nooo! You're such a perv.
Devin: I'm the perv? You're the one that wants him in your pants.
Sarah: Argh! Just shut up!
Devin: Hah! So you do want to have sex with him!