laihaut Share definition Flag 1. A french wordplay with the word 'milk' (lait) and 'up' (Haut), can define an erection. 2. A manly guy. 1. "Do you just had a Laihaut by looking at her ?" 2. "That boy.. what a Laihaut !" laihaut by zacriliska June 19, 2017 0 0 Get merch Get the laihaut mug. Buy Now — $32.95 See more merch