light mouth

telling things to other people easily even when the person told you not to say anything about it.

L: if i told you who my valentine is, please dont tell her that i am her secret valentine for the school event, it wont be fun.
C: okay, i swear i wont.
L: so... my valentine is this sexy girl younger than me called Maria... and coincidentally i've liked her for so long!
C: haha really? that's cool!
-2 days later-
C: hey maria!
M: heyyyy sup?
C: i am telling you a secret okay... dont tell anyone.
M: sure... *smiles*
C: so... two days ago leon was telling me about you...
M: oh? what about me?
C: he told me that he thinks you are sexy. he also said he has liked you for so long!
M:...
C: what?
M: nothing. i got to run for class. bye.
-1 day later-
M: so... chris told me that you think i'm sexy and you've liked me for a long time?
L: WHAT?
M: chris...-
L: YES I KNOW! BUT HE TOLD YOU?!
M: er... yeah? what?
L: THAT LIGHT MOUTH!

by mynameissofreakingawesome October 9, 2009

light mouthed

A person who like telling other people's secrets, make false rummors,and make promises often, but never keep it.

He is a light mouthed. I've never seem him keep his word.

by Yum>_< September 15, 2009