When you laugh and sigh at the same time. This usually happens when you are incorrectly tagged in a facebook status.
The FaceBook
Boy1: Status: Chilling with boy2 on the beach.
Boy2: Comment: Dude, i'm at home!?
Boy1: Comment: Oh crap, i meant boy3
Boy2: Comment: Lolsigh
Boy3: +1Like
by BobzurUncle November 5, 2011
Get the lolsigh mug.