Roadkill heart. Meant to imply the torment and bitter anguish of extending love to a friend, only to have that love nastily snatched away, laid out on scorching concrete, run over by a Hummer (several times) until it becomes nothing but pulp-of-heart. With nice little tire marks for dramatic effect.
In rare instances, accidentally used as a typo of <3.

nemo: i <3 u!
other: aw <#
nemo: :*(
by nemo the nick April 10, 2006
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its a waffle heart
its what happens when you try to make a capital 3 at the end of your heart like this <3
i <3 you

i <# you too

D:
by jake12213 July 30, 2009
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Used in place of <3 when love is so great that it cannot be expressed with something so common and overused.
Hey, Guess what..
What?
<#
by PUSSING May 25, 2010
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Why its a waffle of course!
Person: I'm deppressed.....:{
me: awwwww *pets* want a waffle? <#
Person:*accepts the <#
by Sarita meeka September 2, 2006
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I <# you! Oops I meant <3**
by Christie December 30, 2005
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robot heart, instead of less than three which is a human heart.
"i <3 you" becomes "i <# you"
by diana m. June 6, 2006
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An Explosion of love for somebody/thing.
<# my heart is exploding with love for you!
by klintz.com October 9, 2004
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