A blowpop is the act of having your penis sucked in such a manner that the person sucking you penis slowly drags it out (sucking on it firmly all the while) then pulls the head out of their mouth as they continue to suck firmly on it, producing a loud popping sound effect.

Not to be confused with Charms Blow Pops^®, a brand of lollipop with bubble gum centers created by the Charms Candy Company and later Tootsie Roll Industries.