The Tenlee Theory Share definition Flag The tenlee theory, is the theory in which guys with thick necks just happen to have small and skinny penises. “That guy has a thick neck” “yk what that means……the tenlee theory” The Tenlee Theory by 62771818884 April 11, 2022 0 0 Get merch Get the The Tenlee Theory mug. Buy Now — $32.95 See more merch