tickling your wankstain

To mess with someone in a playful way.

Luke: you don't look cute.
Heather: why would you say that??
Luke: I was just tickling your wankstain, calm down!

fiddling your whistle

To mess with someone in a playful way.

Luke: You bathe in your shorts
Heather: Why would you say that????
Luke: I was just fiddling your whistle calm down!