song I heard yesterday, I was in the accessories dept

I think it has 1, 2, 3...in the lyrics, or 2, 3, 4...sounds a little like bruno mars tune, "The Lazy Song" but that's not it at all...anybody able to help on this one?

and just an FYI, it's not plain white t's 1, 2, 3, 4...and it's a male vocalist

hilarious, it IS bruno mars...it's count on me...in case anyone is wondering.