Having just relieved yourself in your hand; the act of then throwing your spunk across the room in the exact motion that Spiderman would release a web from his wrist.
Rob: 'I'm going out with this slaggy girl, she loves it when I Spidersweb in her face'
To saran wrap a room in a fashion resembling that of a spider web. When complete, lines of shaving cream are put on each strand of saran wrap to give it that silky look, which would also make it more of a pain to clean up.
Spider webbing is always a good way to get back at a fellow college student.
Spider webbing is the act of cumming on a man's beard. This can be either done in a pattern or a straight shot, otherwise known as Charlotte's cumshot.
Person 1: "I am going to fuck the shit out of your stupid face you dirty man slut."
Person 2: "I want you to cover my face in your spider webbing while you tell me how small my cock is"
Person 3: "Im going to shove a shampoo bottle up your asshole"