Yaaar!: See Bra-ap-a-brap-akaka! Gaarr! Arrr! Yaaar!

Yaarrr!: See Flop! Thud! Thunk! Crack! Arrr! Garrr! Yarr! Arrrr! Yarrrg! Skreee Arrrr! Grrr! Yaarrr! Pfffftt! Slam! Whap Whap Whap Whap

Yank!: See Poof Poof Yank!

Yank! Twirl Twirl R-r-rip! Snap Zip Bonk!: A robot grabs the tail of a Morty Dog (Yank!), spins the mongrel in the air (Twirl Twirl) until Morty rips out of his skin (R-r-rip! Snap) and bounces into a bag being held open by a circus clown (Zip Bonk!). (Limbolympia (1983))

Yap Yap Yap Yap: See Skritch Scratch, Skritch Scratch Honk! Skritch Scratch Clunk! Yap Yap Yap Yap Kick! Glug Gabug Glug Gabug

Yarrr! Arr Arrr Grrr Grrr? Arrr? Ahh!: Some real nasty and mean floating heads are about to attack a Morty Dog, but the mutt's saxophone playing soothes the little creatures. (Dogtown Zoo (1982))

Yarrrg!: See Flop! Thud! Thunk! Crack! Arrr! Garrr! Yarr! Arrrr! Yarrrg! Skreee Arrrr! Grrr! Yaarrr! Pfffftt! Slam! Whap Whap Whap Whap

Yawn: An actor in a play portraying Prince Morty's father prepares to sleep, "'Tis deeply sworn. Sweet, leave me here this day, my spirits grow dull, I'm gonna hit the hay." (Tragedy of Morty, Prince of Denmarke 3 (1984))

Yay! Clap Clap Clap Clap Clap Clap Clap Clap Clap: A Morty Dog, who was invited by accident to address a gathering of 1994 Contract with America-era Republicans, discovers his audience will applaud wildly for some frank statements, e.g.: "Our party, the Republican Party, has nothing new or positive to offer America. Our only tools are fear and greeeeeed!" (Cranium Frenzy 7 (1994))

Ying!: See Bzzzz! Bzzzz! Ying! Yoing!

Yoing!: See Bzzzz! Bzzzz! Ying! Yoing!

Yowm: The sound of a deadly lawnmower running amok as it passes over a hole where Snoodle B. Clapsaddle and a Morty Dog are hiding. (Cranium Frenzy 7 (1994))

Yowm! Splash!: A Morty Dog with a purloined halo from the Air Pump Angel, falls into the middle of the Pacific on a mission to get his spine back from a very mean shark. (Cranium Frenzy 5 (1985))