Otherwise Ellen would have no end of fun:

Leonel Arias, 47, told police he was playing a practical joke by donning the Bin Laden mask, toting his pellet rifle and jumping out to scare drivers on a narrow street in his hometown, Carrizal de Alajuela, about 20 miles north of San Jose [Costa Rica].

I mean, really, what could possibly go wrong? Hint: Costa Ricans have guns. Funny only because he managed not to get himself killed.