1. a crack of buttocks seeded by twistedtulip #2 votes Like

    1. twistedtulip
    2. parnell44
  2. a clenching of buttocks seeded by DrMaldoror #2 votes Like

    1. DrMaldoror
    2. shefcrispie
  3. a botox of buttocks seeded by triplecherry Like

  4. a clench of buttocks seeded by roncaldwell Like

Think you can come up with a more suitable collective noun for buttocks? Then Tweet it!

You should follow @collectivenouns on Twitter here.