Anything viewed as extremely boring or awful to endure. Often pronounced "shlow butter" for extra effect or good measure.
Student 1: Man, you sit through class yet today? Teacher had us taking notes the whole time.
Student 2: You mean "slept" through class today... that was slow butter!
Student 1: (in agreement) Shlowwww butter!
by teachmrj February 19, 2019
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A pharse used to describe perfect form in the gym. (smooth) movement workouts done correctly.
Do you see Jay, his form is perfect , I'd call it "slow butter"
by ReidSZN October 23, 2015
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