Sop Sign

"There's something strange about that 'Sop' sign...."

- EPA worker 1

"Look, we can't keep stopping at every "sop", "yeld", or "one vay" sign!."

- EPA worker 2

The SOP Sign is a sign that Homer made to distract the EPA workers with to save the family with a wrecking ball, but it turned out Homer failed to knock the truck down.