What is interesting is that neither Foster Brooks or Dean Martin were drinkers.
Brooks had been sober since the early 60's having had a drinking problem prior to that, however, he gave up drinking and never touched a drop. All of those Dean Martin roasts, he was stone cold sober.
In the case of Dean Martin, he was never a big drinker. Apparently his "drinks" were either apple juice or iced tea. Martin was always very disciplined when it came to drinking and never drank while he worked.
From what I have read.