A chinstrap is when kids grow a beard and wear a hat 24/7. So, it appears that his beard keeps his hat on his head.
by nolipz the midnight marauder October 23, 2003

During the performance of oral sex on a female, a bearded male will place his chin between the vaginal lips and shakes his head back and forth rapidly and lightly to induce a pleasurable experience for the female.
by Joey from AU December 24, 2007

To be 'on your chinstrap', means that you are knackered and absolutely positively cannot go on. You're fucked up good and proper.
Military Slang.
Military Slang.
by Diego July 29, 2003

Incarceration Term-
A hard and heavy blow the chin as a form of minor punishment in prison/jail. Usually given for minor incursions. A head will tell a torpedo to administer the chinstrap.
A hard and heavy blow the chin as a form of minor punishment in prison/jail. Usually given for minor incursions. A head will tell a torpedo to administer the chinstrap.
by Fumanchewd October 26, 2006

When one is inducing orgasm using the art of titty F*cking the final "blow" is produced by extreme pressure causing the seminal fluid to spread across the partners chin causing a "strap" affect.
by Jonathan April 22, 2005

When someone rests their chin on a man's testicles while the man repeatedly hits them in the face with his erect penis.
Jim: Hey, can I give you a Kentucky Chinstrap?
Abby: I've never tried it, but it sounds like fun!
(Abby puts her chin on her Jim's testicles. Jim starts hitting her with his penis)
Wife: This... is... not... what... I was... thinking... dammit, Jim!
Abby: I've never tried it, but it sounds like fun!
(Abby puts her chin on her Jim's testicles. Jim starts hitting her with his penis)
Wife: This... is... not... what... I was... thinking... dammit, Jim!
by The Graham Cracker November 11, 2011

while receiving a blowjob, the male pulls the excess flesh from his nutsack and wraps it around the girls chin, hence, creating the belgian chinstrap
by Crocodilejohndee December 27, 2011
