This cartoon is based on the phrasal verb turn down.
Turn down: to reduce/lower the volume or temperature on a device.
“The radio is too loud. Please turn down the volume.”
“Can you turn down the heat? It's very hot in here.”
“They turned the lights down in the cinema before the film started.”
Turn down: to refuse an offer or request.
"They turned down my offer of help."
“He invited her to the party, but she turned him down.”
“She turned down the job offer because it didn't pay enough.”
