It's actually self explanatory.. This phrase, first popularized in the song Mellow by the artist HXBIBTI, means to pretend to be "chill" or "cool" (when you really just want to put yourself out there) just for the sake of a varying numerous reasons. (Ex. for a friend, or even a significant other.) Another variation of this phrase: "actin the mellow"
by GOAT LYRICS April 17, 2017
Get the Act The Mellowmug. by thatquietkid August 15, 2010
Get the Class Actmug. by 2ch-man November 22, 2009
Get the lounge actmug. The kind of guitar, bass, or other popular instrument you see at Wal-Mart or Target. They are unbelievebly horrible instruments, and you are probably considered a n00b by just about every actual musician.
by Okay. June 17, 2006
Get the first actmug. Having sexual relations, cuddling, kissing, holding hands, hugging, and/or deep emotional conversation.
by the known society January 18, 2015
Get the intimate actsmug. by The Return of Light Joker July 11, 2011
Get the act of congressmug. by markuz July 10, 2005
Get the cunt actmug.