‘Who’s writing your tweets — Breitbart?’: Jerry Seinfeld slammed for 'Lewis Black's Life Matters' pun

As part of his online series "Comedians in Cars Getting Coffee," Jerry Seinfeld tweeted out a promotion for the upcoming episode with Lewis Black. It didn't go well.

"New! Comedians In Cars Getting Coffee: Lewis Black. Black’s life matters," Seinfeld tweeted.

It's unclear if Seinfeld does his Twitter account himself or has handed it off to a staffer or marketing firm, but those who saw the tweet were not pleased with the joke. The tweet also included his sponsor Acura, which also received some of the backlash for the pun.

Here are a selection of the responses Seinfeld received.