Anyone can mash potatoes
A tire.
One is a group of cunning runts.
We're raising mashed potatoes.
If it ends up on your wall, you're probably retarded.
Anyone can roast beef, but not everyone can pea soup. (As told by my 8yo, who made me laugh with a joke for the first time. Proud dad moment.)
Anyone can mash potatoes!
A potato.
You wouldn't pay to have a potato on you.
Guacamole.