Some schools have a time policy for professors which allows students to leave if the instructor does not arrive after a given amount of time. Clock Blocking is when a professor arrives just before this time expires.
It was 11:14 and we were so close to having class cancelled when Dr. Jones walked in and totaly clock blocked us.
by DJ Walt April 23, 2009

by Alpha_Ranga August 8, 2020

An individual who possesses certain attributes that reveal their true gender. Usually used in the lgbtq community to distinguish a biological woman, versus a transgender woman. “Clock Monster” is a derogatory term.
Vanessa is such a clock monster: you see that hard ass jawline and them big feet? Even though she has a wig on, you can definitely tell that’s a man.
by mkckjclub January 29, 2023

narrow-minded thinkers
by KorruptLeKleptocrat April 16, 2019

by MegaMas007 June 6, 2017

The level of beer in the last pitcher or glass, that determines when it's time to leave the bar or restaurant. i.e., when it's empty it's time to go -- and not before. (Obviously the beer clock can be reset by ordering another pitcher/glass.)
Child: Dad when are we going to go?
Dad: When the beer clock says so (pointing at the pitcher that isn't empty)!
Dad: When the beer clock says so (pointing at the pitcher that isn't empty)!
by mmcg1 October 14, 2015

Holy shit we better finish this job soon, its already past 5:00 and my beerological clock is ticking.
by flyingglass March 29, 2011
