The person who violently shakes the handle of the bathroom door trying to open it when you're in a "single seater" public bathroom. They must think the door is stuck and are determined to break in and turd burgle you.
Man, I had to leap from the toilet in order to defend the door from the Jiggler that was attempting to turd burgle me after lunchtime.
1. A man who likes to jiggle or shake his penis to attract the female or even male species.
or
2. A woman who like shake her boobies to get men hard.
Girl: Are you a jiggler?
Boy: Why yes, wanna see my dick jiggle and shake."
Girl: Yes please.
~ jiggle jiggle wiggle wiggler~
Boy: So did you enjoy the show?
Girl: Ohhhh yes.
Girl: Fuck me.
Boy: Yessssssssss!