To stick ones finger ,usually in the form of a sneak attack, in someone's ass crack when it is exposed above their pant/underwear line. While doing so scream "Buttack!!!"
As Emmett leaned over exposing his plumbers crackJason exclaimed "Buttack!!" While sliding his pointer down his toosh.
When a person is born with the parts to form a butt (butt cheeks) but no flesh ever properly forms in it, so that the prson doesn't have the natural roundness of a butt and are therefore forced to sit on the extension of their thighs for lack of a natural butt. Or in simpler terms- lack of butt meat.
Hold on, is that Crystals's thighs or just her vestigial buttsack that's creeping from the top of her jeans when she bends over?
A word with no true definition as a noun, but is generally used as a word to throw people off when a question is asked that the person doesn't want to answer and/or might be dangerous to answer.
Woman- "Do these pants make me look fat?"
Man- "Buttsack."
Woman- "What?"
Man- "Buttsack."
Woman- "...What were we talking about, again?"
OR
Girlfriend- "Do you love me?"
Boyfriend- "Buttsack."
Bystander- "...Did he justsay 'buttsack'?!"
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.