Watching a snooker match on youtube, Alex Higgins adopts quite the stance at 2:20 in the match to follow that rule. Later at 7:20 he has the referee clean the cue ball so he can get a drag on his cigarette...
https://www.youtube.com/watch?v=6aC3_Dkops4
https://www.youtube.com/watch?v=6aC3_Dkops4
