HK wrote :

Alaska Governor Sarah Palin, who famously compared herself to a
pitbull in her vice-presidential acceptance speech at the Republican
National Convention, appears to have antagonized a key voting bloc in
the upcoming election, the nation's pitbull owners.

From a story in National Lampoon, ca. 1974, set in a nightclub with a
decadence theme:

"He dances like a spastic!"

"I resent that!" said a spastic.

Dennis