Verb - to crumble.
The disappointing act of giving up on one's intentions, usually at the very last minute. This usually involves peer pressure or just a total lack of backbone.

Adjective - to describe a person who is likely to crumble often. e.g. 'That guy is a right crumble'.

Sometimes this adjective becomes a nickname as such, but this is only ever used when someone is a notorious crumble.
*2 weeks to the night out*
Nick: "You coming out in 2 weeks, Don?"
Rose: "Yeah, sure"

*2 minutes to night out*
Nick: "What time do you wanna head off, Don?"
Rose: "Not going, sorry......"

----- (This can work the opposite way round too) ------

Juan: "Nock, I thought you weren't coming out tonight? You said "I can't come out tonight, I'm trying to be healthy and don't want to feel rough tomorrow", but you're here!?"
Nock: "Ermm..."
Juan: "Mate, you propa crumbled!"
*
by AppleAvenger123 January 29, 2010
Get the crumble mug.
to break, be destroyed or to shatter into several pieces; to leave, to think, to feel, to associate oneself with sexually, to taste and/or lick, to be raped by, to acquire, to call, to enjoy, to desire.
"Sorry, I have to crumble off the phone now."

"Did you hear about Mr. H, the rapist social studies teacher? I heard he crumbled like 2 squillion kids' biscuits!"
by Crumblerrr January 5, 2009
Get the crumble mug.
When something is messed up, not right, jacked up, not cool or not fair its a crumble. It can replace any of those sayings.
Awww man that's crumble!!!!!!!
by Crystal 4 shizzle January 17, 2008
Get the crumble mug.
When you have a food and it crumble on floor
man FUCK why did this happen now theres crumble all over the floor
by old crumbler December 9, 2018
Get the crumble mug.
When having sex for the first time in a while (usually because you are a loser) and the debris in your pubes "crumble" and fall off/out of your pubes. Debris such as dandruff, dust, mold, dirst, and in some cases dried cum from uncontrolled masturbation events.
Girl 1: So i heard you had sex last night
Girl 2: Yeah but it was obviously the guys first time in a while
Girl1: Why, did he crumble?
Girl 2: He crumbled the whole time!
by Nick_the_Cow July 13, 2009
Get the crumble mug.
That crumbly smells like oatmeal, butterscotch and cat pee.
by eringibby January 10, 2010
Get the Crumbly mug.
Too pissed to know whats goin on. Cant do anything without stumbling and falling over.

A sense of your mind crumbling away into nothing.
by MajorFool May 24, 2007
Get the crumbled mug.