To show that ur mom, who is a woman, likes another woman, like your friend's mom which makes your mother, gay. A of memes, it's spelled "gae".
by loblock_pillows June 3, 2018
Get the Ur Mom Gaymug. by mobambahasenteredthechat June 23, 2019
Get the ur mom gaymug. 
100x more worse than "ur mom gay lol." the "lel" overcomes everything and making it the best comeback in the history of ever.
by jilliansavukinas October 20, 2018
Get the ur mom gay lelmug. by NiggaStoleMyBeans March 16, 2019
Get the Ur mom gay lolmug. A roast originating from the Medieval Times. This had been used in a plethora of arguments throughout the human's existence. "Ur mom gay lol" is known to be the deadliest insult known to any life form in the universe; the lore surrounding it suggests that once this has been said, Earth will be expected to shatter in too many pieces.
Alex: My peepee is very huge, and u have a microscopic peepee
You: Fuck off asshat
Alex: Your just sad that u don't have a peepee
You: First of all speaking fucking English. Second, it is you're. Lastly, ur mom gay lol.
Alex: I don't feel so good
Alex: *fucking dissolves*
You: Fuck off asshat
Alex: Your just sad that u don't have a peepee
You: First of all speaking fucking English. Second, it is you're. Lastly, ur mom gay lol.
Alex: I don't feel so good
Alex: *fucking dissolves*
by Alt._.One June 8, 2018
Get the ur mom gay lolmug. Billy: ur mom gay lol this if for all of the bullying you meanie get rekt scrub lololololol u suck kiddo get rekt
Gary: we are brothers
Gary: we are brothers
by RealTrueFacts May 29, 2018
Get the ur mom gay lolmug.