Slab Sex Share definition Flag Refers to sexual intercourse, with a person who puts in no effort. Thus resembling a cold slab of meat. "Last night was terible, it was just slab sex. you could have put some minge into it!" Slab Sex by suburbanmerlin October 14, 2008 0 0 Get merch Get the Slab Sex mug. Buy Now — $32.95 See more merch