By James Hibberd
Updated June 11, 2011 at 01:17 PM EDT

Chris Rock tweeted a defense of embattled fellow comic Tracy Morgan on Friday, prompting GLAAD to fire back.

Rock, who’s known to push the envelope during his stand-up routines, said of Morgan’s anti-gay jokes:

“I dont know about you, but I dont want to live in world where Tracy Morgan cant say foul inappropriate s—“

Replied GLAAD: “Language about stabbing kids for being gay isn’t ‘foul.’ It’s dangerous.”

Earlier, NBC’s top programming executive Bob Greenblatt and Morgan’s 30 Rock co-star Tina Fey issued statements about Morgan’s routine, which he has apologized for.

UPDATE: Chris Rock reverses on Tracy Morgan: ‘I don’t support it at all’