"Gayer than cum on a mustache"
"Dumber than a bag of hammers"
My favorite one for shitty equipment operators , "You couldn't run a stiff dick into a lard bucket"
"Higher than giraffe tits"
"Harder than woodpecker lips"
"Blacker than Bigfoots dick"
"Go suck start a shotgun"
"Go fuck a blender"
"I pray you die in a horrible broomstick sodomizing accident "