My parents actually had a copy of "Yogi's Great Escape" on VHS when I was a little kid. That and another Yogi Movie we had once upon a time as well. All I can remember about it was a scene where Yogi and Boo-Boo inhale "Helium-Ah mum mum mum gas". That's exactly as I remember them saying it.
OT: Yogi was at least considerably funnier than Flintstones, and the rest of the Hanna Barbara cartoons were alright, but I didn't have Cartoon Network as a kid, so it was either old tapes of Tex Avery's Droopy or Nickelodeon, and Rugrats didn't come on until later, so, yup. I never really watched the other H/B cartoon characters. My mainstays were Yogi, Droopy and Tom and Jerry.
Dammit, Bob, why do you make me think about my childhood? The 90s sucked for you, but that was my existence. the 00s suck now. Vicious cycle, I guess.