Two guys meet on the April fools day, and the first guy says, "Your shoes are untied."

The other guy looks down, and sees his shoelaces are neatly tied. He pauses for a moment, his face now pale. "B-behind you! A d-dinosaur!"

The first guy laughs and waves his hand. "There are no such things as dinosaurs!"

And then the dinosaur ate them both.

Best April Fools ever.
~Twi