When one takes extra long in the shower because he/she needs to masturbate either in, before, or after the shower. Often happening when a guest has his girlfriend over at the host's house and gets action resulting in blue balls.
Dude 1: Dude, why did you just take a 30 minute shower at 3 O'Clock in the morning at my house?
Dude 2: Sorry man needed that extended shower.
Dude 2: Sorry man needed that extended shower.
by Coco Puff tha Don April 8, 2008
Get the extended showermug.