To do anything of a sexual nature to someone of the opposite sex, code for something dirty that allows you talk openly in front of strangers/others/parents/ladies..
"Oh god, we kunkled all over the house.. even on the washing machine"
"I kunkled the living shit out of her"
"dude, i kunkled her right in the face"
"have you ever kunkled someone in an airplane toilet... awesome!"
7👍 14👎