A.M. Lumber Share definition Flag When one wakes up with an erection. So I slept in the same bed as my mom last night...it was really awkward because I woke up with A.M. Lumber. A.M. Lumber by Alex "Dildo Baggins" April 20, 2007 0 0 Get merch Get the A.M. Lumber mug. Buy Now — $32.95 See more merch