At one place I worked, if you wanted to mess with someone, you'd walk by humming or singing some gawd awful song and they'd be stuck with it playing in their heads for a while.
That Far Side cartoon had the opposite effect.
You could walk by and say "Oh please, oh please" and they'd start laughing.
The Far Side was cool that way. Hard to believe, but Jan. 1, 2015 will be 20 years since he retired.
Retired, but never replaced.
(Fwiw, rumor has it Pep was set up.)