Boys at Vernon Center Middle School are constantly quoting the ad, WFSB-TV, Hartford, Conn., reported.
"Everybody's walking around in the hallways and saying its hump day in that weird voice," said Brooke Lewis, a student at the school. "Sometimes it's the counting down to when it is."
Other students say they have been called to the principal's office for quoting the commercial, as teachers find using the phrase to be disruptive.
Parents seem to agree.
"OK, that's getting out of hand," said Mick Ruggiero, of Vernon. "Just keep it to Wednesdays and we'll be all right."