Denji is really dumb, like absolutely dumb. You can't blame him, since he didn't have any proper education when he was a kid, but sometimes it annoys you when he doesn't understand some common sense sometimes.

You're sitting down at a table at a fast food place, eating... Well, fast food of course, what else? Anyway, you asked Denji to throw the water bottle at you since he was pretty far from you and the water was at his side of the table.

"Nom, nom, nom... This is really good! Hm? You want me to throw you the water bottle? Okay then!" He says confidently with his wide innocent grin, and he throws the water bottle at you.

... Which landed on your face pretty hard, and also made the cap of the bottle open, resulting the water to splash into your face.