CTM is an acronym for "Chuckle To Myself", used in text/internet language and now spilling into current usage. Used when a comment brings about an amusing mental picture in the listener/reader. Origin - SE Qld, Australia.
Friend texts you - "just saw a man sneeze out his false teeth.."
*creates instant mental image which gives you a giggle on the inside* you respond "ctm"
*creates instant mental image which gives you a giggle on the inside* you respond "ctm"
by Red Bec May 13, 2011

A word used to describe a guy that takes ab selfies, practices incest, and says he can beat the shit out of anyone despite never being in a fight before.
Person 1: Hey Christian over there fucked his cousin and got her pregnant. When I asked him about it he said he would beat my ass.
Person 2: He's never even been in a fight!
Person 1: Yeah I know, he's such a CTM
Person 2: He's never even been in a fight!
Person 1: Yeah I know, he's such a CTM
by theBOZ February 4, 2015

CTM stands for Chuckle to myself. Used when the joke your friend made is not LOL-worthy because you didn't actually really laugh out loud.
Friend: Did you see what she was wearing?
Friend 2: CTM, she looks like a clown.
Friend:Dude, what religion is my religion?
Friend 2: CTM, are you drunk?
Friend 2: CTM, she looks like a clown.
Friend:Dude, what religion is my religion?
Friend 2: CTM, are you drunk?
by k12k23s11 November 17, 2011

chuckle to myself. Because sometimes you don't really lol (laugh out loud) it is more like a chuckle to myself...CTM
by Tre Stewart February 9, 2009

CTM, or "Chuckling To Myself" is the new LOL. Typically, one is not laughing "OL" (out loud) when it's typed, so it's been revised for situations with more subtle humor...or less funny jokes.
Here is how CTM would be used in a sentence.
SD: That crazy landlord came upstairs again! I think he has a drinking problem.
IN: CTM
SD: That crazy landlord came upstairs again! I think he has a drinking problem.
IN: CTM
by IsaacN January 6, 2006

by SPUDN1K December 24, 2010

Means "Chuckles to MySelf". often used while texting or playing an online video game. only use this term when "Lol" is just to much.
guy 1: "That's the third time i died trying to kill the orc king!...ugh."
guy 2: "ctms, you suck at this game"
guy 2: "ctms, you suck at this game"
by Ralph Littlefield March 6, 2009
