June 30, 2011 at 04:54 PM EDT

Tracy Morgan has landed in hot water yet again, this time for a stand-up show during which he mocked “retarded” kids and “cripples.”

Performing at a New York comedy club on Saturday, Morgan told his audience not to “mess with women who have retarded kids” because “them young retarded males is strong … they’re strong like chimps.” Morgan also talked about hooking up with a “cripple” with a prosthetic arm. The crowd reportedly responded with groans and “uh-oh.”

The Arc, an advocacy group for people with disabilities, is calling on Morgan to apologize. “Tracy Morgan should apologize immediately,” The Arc CEO Peter Berns told EW in a statement. “This quote is far too offensive to be excused as comedy, and it is very hurtful to people with intellectual and developmental disabilities and their families.”

Berns added: “Mr. Morgan has an incredibly powerful platform from which to fix this, and if he’s learned anything in the last few weeks, he can’t bomb this apology.”

The dust-up hit just as the media firestorm surrounding the 30 Rock star’s anti-gay routine earlier this month in Nashville had started to die down. It should be pointed out that jokes like Morgan’s latest are not hugely unusual on the stand-up comedy circuit, and one wonders if this routine mocking people with disabilities would have made headlines if not for the media keeping such a close eye on Morgan following his previous controversy. In fact, Morgan’s been hitting this territory for awhile — a New York Post review of his show back in November said he mocked “cripples” and dubbed that section of his show “flat-out hilarious.” (NSFW video of a previous show below.)

On the other hand, going back into comedy clubs and telling offensive jokes so soon after digging himself out of the anti-gay blow-up probably wasn’t the smartest course of action either.

NBC’s top entertainment executive and Rock star and executive producer Tina Fey both issued statements expressing disappointment at Morgan over his anti-gay rant (which included him saying “I would stab my son if he acted gay”). Morgan’s apology tour included meeting with gay teens, making peace with GLAAD, and revisiting Nashville.

NBC had no comment on Morgan’s latest headlines and below a video from Morgan’s stand-up mocking people with disabilities. The language is VERY NSFW:

Read more:

Tracy Morgan returns to the stage post-controversy

Tina Fey and NBC chief denounce Tracy Morgan’s homophobic rant

Tracy Morgan issues apology for homophobic rant, says it ‘clearly went too far’

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