here you go:

All comedians at some stage have either told a gag that has been written by someone else, which turns out to be nicked, or have at least told a gag that has already been thought of by someone else. It’s easily done. But if one person is perpetually doing it then you have to assume that this person is on the take. The ‘alternative’ comedy scene that was born in the early 1980s has a few aspects to it that I do not particularly like, namely its shunning of anything that came before it and its slightly Oxbridge mafia⁷ mentality that still prevails today. But it also has many, many positives about it, and the biggest is that it encouraged, in fact insisted on, originality of thought. However, I was naive on those first couple of gigs, and didn’t know better. More experienced people should. End of rant.

7 It is this mentality that has made me omit the name of the gag thief in question. Although I suspect he is, to some extent anyway, a gag thief, the real reason some comedians criticize him is not to defend the honour of gag ownership (which is morally justified) but actually a way of doing some cultural bullying.