Definitions by A.M.F.Y.

web slinger 

when you're fucking your girl and about to cum, pull out and shoot it in your hand. Make the "spider-man" web slinging hand and fling it on the girls face (or ass, tits, whatever) while making the "pfffft" web slinging sound.

I pulled out, said "pffft" and gave her a web slinger right in the face!

web slinger by A.M.F.Y. March 13, 2008