Partitioning fecal expulsion, and all related processes to mitigate risk of internal toilet blockage.
John: Have you been flushing twice?
Jake: No, why?
John: Because you just f**ked up the toilet again.
Jake: No, why?
John: Because you just f**ked up the toilet again.
by PossumCuber July 9, 2010

A rejection of a romantic advance; derived from the song "Knock Three Times" by Tony Orlando and Dawn.
by NA + mum October 16, 2007

A popular term used for someone to tell another dumb person to think in their head a second time. Maybe even three sometimes, then it would be called think third. Your average mama has been using this slang too much.
Person 1: Hey, I think I’m gonna piss in public. Got any advice before I do so?
Person 2: What the hell is wrong with you!? Think twice!
Person 2: What the hell is wrong with you!? Think twice!
by PBS25 September 25, 2020

by sssssssaass December 28, 2020

Touching oneself masturbate
by Bernie is king March 1, 2016

by kang yeosang August 25, 2021
