Opposite of Jason

Alright listen up, smarty pants! So, like, Jason is a dude's name, right? And the opposite of a dude is a *drumroll* dudette! So you take "Ja-" from Jason and stick it to "sister" and BAM! You get "Jasister"! It's like, opposites attract but in a super-duper dumb way that makes you chuckle because you're not too bright.