They murdered him
So nerd guy says to jock guy "Jump in the water. When the leeches follow you in, get out and we'll electrocute them."
Jock guy goes in the water.
Nerd guy takes his shirt off for some reason.
The leeches follow him and Jock starts climbing out of the pool.
Nerd guy yells to his girlfriend to turn the power on.
But Jock guy falls back in the water.
Nerd guy rushes in to tell his girlfriend to not turn the power on but she's being attacked by Coach guy.
After Coach guy is dead, Nerd guy forgets that Jock guy is still in the water.
Jock guy is almost out of the water when Nerd guy flips the switch and fries Jock guy.
Nerd guy and girl walk out and see Jock guy dead in the pool but nerd guy still asks girl if he can go over to her place for some sex.
Now that's comedy