(AKA Lazy Boner) When your penus fills with blood so its still limp but appears much bigger then usual, in between limp and a full erection. It can be used to impress ladys as if that were the size of your penis on limp but really its on lazy b
Ex1. She is so hot I got on Lazy B just by looking at her.
Ex2. Is it really that big on limp? or is it on lazy B?