Define Morning 2x4 Meaning

Morning 2X4
An extreme case of morning wood, where the guy wakes up in the middle of a wet dream and didn't dream climax. Resulting in waking up with blue balls and an urge to fuck the nearest thing in sight.

Tedd: Man today was a rough morning.. Byron: Why? Tedd: I woke up with morning 2X4 today. Byron: Owch, must've sucked Tedd: Yeah. Good thing Shannon was there to relieve me.
By Leone