Buttering the bread 

A type of poop where first one performs a toaster (farting immediately after pooping so you toast the poop) followed by diarrhea so you put butter on the toast.

Aw it smells like mike is buttering the bread.

Buttering the bread by Vin coosan July 24, 2014

Buttering the bread 

An exceptionally smooth landing, usually performed in an airliner.

Look at that pilot perfectly buttering the bread

Buttering the bread by AtOmIc_NeRd January 3, 2019

Buttering the bread 

An extraordinarily smooth plane landing.

That pilot is really good at buttering the bread!

Buttering the bread by AtOmIc_NeRd March 1, 2019

Buttering both sides of the bread 

To go much harder than is necessary. Worthless overachievment.

"Aww man, I studied for three hours and the test turned out to be easy! I really buttered both sides of the bread on this one."

"Dude last night I took ten viagra before fucking my girlfriend!"
"Woah man, why you always gotta be buttering both sides of the bread?"

Buttering both sides of the bread by John Handcock1234 December 12, 2012