A term originating from the video game League of Legends used to emulate swear words. '5m' is censored by the
chat filter and became widely known when a reddit thread on /r/leagueoflegends about it made it to the front page. Became a common meme after professional League player
Vasilii was caught beating his girlfriend on stream, and commenters began using the term to describe him/his actions.
The post simply stated "I was trying to help one of my friends with
physics homework while playing league and I tried to type 2.5m/s2 but it came out as 2.**/s2."