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1.
A girlfriend who plays videogames AND cooks you dinner.

Hang on to her. She's a real kermuffin.
by Networker June 21, 2006
 
2.
n. (ker-MUFF-ins)

An uncommon mispronunciation of the word "COMEUPPANCE"

Typically used by those who have gone through their entire life not once ever seeing it spelled in its entirety. Interpreted as a well-deserved rebuke or penalty, or KARMA.
JOE: "I just boinked your mom"
GREG: "Damn you. You'll get your kermuffins"

(awkward pause)

JOE: "Dude, did you just say 'KER-muffins'? laughter, it's 'COMEUPPANCE'!" (laughter continues)
(JUST THEN a Velociraptor devours Joe)
GREG: "See. I told you..." (pretends to be a tree)
by notpmoc November 08, 2010