tumblrmlcuncsdng1rqgjz2o11280He must’ve not known bout her…

At a recent concert in Copenhagen, Denmark, one ambitious fan decided that he was going to do what many men that aren’t Jay-Z only dream of: he was going to slap Beyonce’s behind.

And while she was singing her hit, “Irreplaceable”, he did just that!

Check out the hysterical video, which includes Beyonce’s warning and adult reaction, below, and wonder if you would have had the courage/guts/enough idiot brain cells in that head of yours to do the same.