quip about (someone or something)
To make witty, pithy, or snide jokes about someone or something. The two brothers sat in the corner quipping about the various guests their parents had invited. I'm glad you're able to keep quipping about such a dreadful situation, Susan!
quip about someone or something
to joke about someone or something. The kids were quipping about the principal's hairpiece. It is rude to quip about an elderly person.