Clark’s pizza’s matchbooks had a public service message, “Don’t get sauced”. They probably had a few customers that were causing trouble because of the drinking- because what goes together better than pizza and beer?
The illustration shows a very concerned tomato helping his wasted friend, who is about to cheddar all over the carpet. The drunk cheese is all “I love you man!! No man, I mean it… I really love you!”
Or maybe the tomato is his girlfriend. Who can tell?