seals, moose's, bees (in their heads), cows, sheep, dogs, alligators, horses, small rodents, the mentally disabled, dragons, unicorns, pigeons, old doors, rabbits, dolphins, various bacteria, insects, brick houses made before 1983, brooms, noses, frogs, some windows but not all, computers, Chris, Jesus, baby moles when the moon is full and telephone poles (maaaah)
a word used at random moments to make someone else laugh; very similar to muurrrr but more fun to say. If you don't have fun sayin "maaahh" then you must be saying it wrong.