I can recall three incidents where answers were bleeped on MG 7x.
I forget the question, but it had to do with a part of the body, and Marcia said "genitalia" (you could make out the answer if you played it back in slo motion)
Certainly a classy way to say it, (as opposed to Nell Carter's more purile "pee pee") but it was bleeped anyway
I recall Dick Martin being bleeped too, on MG 78, but honestly I couldn't make out his answer. Apparently it was a person that they didn't wish to offend.
On MG 76 or 77, Brett was bleeped too. She gave the response "knocked up", which I suppose was unacceptable at that time.
During the first year of MG, there were responses that were just edited out altogether, without any real explanation. I suppose, since they didn't match, it didn't matter what the answer was, but it made for a sloppy edit. GSN also did not re-air any MG 73 eps. that had derogatory references to gay people. The panel pretty much stopped doing that once Charles Nelson Reilly became a regular.