01/05/2012 09:58 EST | Updated 01/05/2012 10:17 EST

Caught Cheating With A Sexy Girl Prank: Just For Laughs Is At It Again (VIDEO)

The ol' lipstick on the collar is a dead giveaway that someone has been cheating -- or is it? This hilarious video has us thinking twice.

Orchestrated by the folks at Just For Laughs Gags, the prank arm of the famous Montreal-based comedy festival that brought you such classics as 'free ice cream' and 'hands for feet' -- this gag definitely raises some eyebrows -- mainly those of the women who fall prey to the prank.

The setup: while shopping for clothes, unsuspecting men are 'measured' by a shop girl before they head into the change room to try on their picks. Little do they know they've been 'branded' with lipstick in a most suspicious place. And that's not the only surprise...

We won't spoil it for you, but the end result is infinitely better than this cringe-worthy cheating prank done by a radio station a few years back. Or, in case you missed this gag gone wrong, check out the video below of a high-school prank where students were tricked into making out... with their parents!