kids game ( for 5 years an under ) ( adults foreplay )
my 2 year old bump heads with her daddy. Sooon my honey we will bump heads in bed. Friday is our naughty night!!
by itichie_nocanpo July 8, 2006
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This is when two dudes bump each others tips.
Hey man lets start bumping heads.
by Rbomb04 July 25, 2014
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A action portrayed by master electricitans by bumping the crotch areas together. Only the best of the best electrical professionals perform this act. The friction of bumping/contacting both crotches together conducts its own electrical fusion. This can only be performed when both participating are wearing a working mans blue jean.
Foreman: Hey Utters, you got that wired up yet?
Worker: No not yet, me and the journey man are up here bumping cat-heads getting prepared.
by TheLegendOfUtters May 25, 2018
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You thought wrong

(Very common in the California Prison System, & on the streets)
John can you loan me some money

You bumped your head, no way am I going to loan you any money.
by Kconnor56 June 27, 2010
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In the Illinois reformatory in the 1960's this term meant a homosexual act of touching the head of a penis whith the head of another penis.
"Man; That punk in room ten wants to bump my head".
by superyouper October 31, 2005
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Meaning you must be seriously crazy. That you or someone else is experencing a really dumb moment at that time.
After Jimmy made the dumbest comment I ever heard I said fool you done "fell and bumped your head"
by darrin2000 November 7, 2007
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It essentially means you have you lost your mind? or it can be used to express your hatred or dislike for a particular activity or person, similar to kms.
"Moe's is better than Chipotle."
"Have you bumped your head?!?"
or

"This traffic makes me want to bump my head."

or
"Help! I have bumped my head and I can't get up!"
by colls42 December 5, 2013
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