A Towel
A towel is like planking but worse. You lay on something like you're a piece of fabric. It's stupid and only cool kids do it.
I laid on the floor like a towel. My friends said I was a cool kid.
My sister laid on the couch like a towel. She said it was the most comfortable thing ever.
I laid on the table like a towel. My teacher said I was the dumbest kid in class.