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1.
This is the acronym for "Come On My Glasses". It is defined as the action of ejaculating on another's glasses at their request.
1) Will you please COMG?
2) After I am done with this, will you COMG?
3) That felt so good that I'll let you COMG.
by J. Edward March 30, 2006
 
2.
Taking typos to a whole new level, comg is a misspelling of xomg, which is a misspelling of zomg, which itself is a typing mistake made my those missing the shift button in Omg, which is an abbreviation for Oh my God.
It is used by either really stupid people, or people making fun of really stupid people.
comg let's hang out l8err!
Lyke, comg Miley Cyrus is coming to Seattle nxt week!
by Leah U August 08, 2008