Our crazy son.....

Constantly plays this game where he pulls his bib or blanket over his face & leaves it there. I wait to see how long it will take for him to take it off, but he doesn't, he's gasping for air & doesn't take it off. When I finally do it, he laughs thinking this is the funniest thing ever. To me this is scary, to him a game of peek-a-boo???