its when you tape a potato to your dick to make the tip bigger during sex

Spending lazy time on a couch watching tv, from the expression couch potato

when you throw potatos out of you car window at other cars and people not as good as egging tho

To fucking headbutt someone

Same meaning as Potato Potahto, but used when texting to save time and energy of spelling out Potahto.

it is the meaning of life

A religion that believes that potatoes are the ultimate source of life, and that everything began with potatoes.