A fake stock name used on Reddit (especially r/GME) to parody the efforts of hedge funds, which have been attempting to divert attention away from $GME by hyping up other random stocks.
"GME is cool, but I'm loading up on $CUM now" -Reddit user
"Just wait until you see tomorrow’s news articles ('Reddit is pumping $CUM!' or something else along those lines)." -Reddit user
"Just wait until you see tomorrow’s news articles ('Reddit is pumping $CUM!' or something else along those lines)." -Reddit user
by Ajfndjcoakqmdkf March 4, 2021
Get the $CUMmug. by Führer of germany January 1, 2022
Get the Cummug. 
CUM stands for "C'mon, Unfunny Man"
For example, if your friend tells an awful joke, you can respond with, "CUM".
For example, if your friend tells an awful joke, you can respond with, "CUM".
by FuZe1 June 7, 2023
Get the CUMmug. The white stuff that comes out of a peins.
by FatUglyWhiteChick December 9, 2020
Get the cummug. 
by Vo1d_Sheep March 9, 2022
Get the Cummug.