Put a brick under each hoof!
Neigh-boars.
They have a lot of moo/neigh.
A: When you lay a brick it doesn't follow you around for two weeks whining.
Bricks can get laid.
Because he wanted to feel his oats!
Fiddler on the hoof!
Toad. Thanks, HammerElectionBeans for the edit.
Because he might fiddle with your kids.