What is he, a mule?
No. An old comic strip (still intact?) by Hart. A character watched as some clams eyed him, and when they thought they couldn’t see him, they sprouted legs and walked away.
He yells, “CLAMS GOT LEGS!” One clam turned to the other and said, “Now you done it. What will we do when the other clams find out?”
First calm. “If I know them, they’ll kick me to death.”