A pseudonym for testicles, as first coined by Adventure Time character Ice King.
"Look fellas, over there! Someone got hit in the boingloings. The boingloings. Hit in the boingloings."
ayon kay UberNinjaNerd ika-22 ng Hulyo, 2013
Slaping a girl with your sack as fast as you can. Up and down. Side to side.
I was pissed at at my girl friend so, I boing loinged her.
ayon kay The Retard ika-07 ng Mayo, 2012