I was given this advice from my first psychology teacher.
See also Scatological.
Kind sir, might you lend a hand and add a funny advice?
So you don't accidentally pee your pants or have your baby.
My grandma gave me this advice so my kids wouldn't be born ugly. See also Old-Timey.
E.g. "Let's Eat, Grandpa" vs. "Let's Eat Grandpa". See also Cannabalism.