I think yawn rape has been used a lot. Blokes I went to school with have definitely been saying it for a while. It certainly doesn't excuse Russell Howard but it does mean that his edgy joke is old and even more crap than before.
I am not sure which is worse, shit like this which at least doesnt get massive coverage or the likes of Russel Howard calling it yawn rape when a friend deliberatly spoils a good yawn for you by sticking his finger into your open mouth mid yawn. That went out to a couple of million on a Friday night.