London slang. as in 'come we go'. you wana initiate a fight, or expressing a severe disagreement with something that your willing to strongly argue over.
1): gimme your fone blad
: fuck you, get lost
: cumwego!
2) :you know that tottenham are so shit now
:cumwego!
by Judge Fudge December 14, 2004
Get the cumwego mug.