First of all, what podunk, one-horse town do these people live in that they've got nothing better to do than jump in puddles at a Family Dollar? Second, the dude who takes the plunge grossly undervalues himself and what him walking around with wet socks and shoes all day should cost his friend. The $1 price tag is appalling. This jump, if it wasn't in what looks to be an overfilled sewer, is at least a $20 jump. For what happened here, you'd have to pay me no less than $100; he completely submerged himself in certified shit water and he probably took a few accidental gulps. These guys would definitely wake up without one eyebrow the next time they passed out drunk if that were me.
According to the YouTube description they had no idea this puddle was bottomless, "My friend will give my other friend one dollar to jump in this "Puddle" (We all thought it was a puddle SWEAR TO GOD!)" So yeah, they actually were just jumping in puddles for fun.