spidering Share definition Flag When a guy cums in his hand, and shoves it up the woman's vagina. This is what spiders do when they mate. Dude: I came before I could get it in, so all she got was a spidering. spidering by Trevor Aniston March 4, 2008 0 0 Get merch Get the spidering mug. Buy Now — $32.95 See more merch