05/24/2012 09:22 am ET Updated Jul 24, 2012

Jim Gaffigan Debuts His New Catchphrase On 'Late Night With Jimmy Fallon' (VIDEO)

Comedian Jim Gaffigan has been making the rounds on late night TV these past few weeks promoting his album, "Mr. Universe," which he's selling on his website for $5 a la Louis CK.

He enjoys these visits, but one topic that's really starting to get on his nerves is what a "clean comedian" he is. Sure, he may not swear in his set, and one of his most famous jokes may be about Hot Pockets, but that doesn't mean he's not an edgy guy.

So on Wednesday night's "Late Night," Gaffigan decided to let Fallon in on a little secret: he has a new catchphrase and it's far from PG.

We're not gonna ruin it by telling you what it is, but watch the full clip above.