Term used by amateur flight "simmers" who typically watch certain disgraceful Youtubers. It is used to describe unrealistically smooth aircraft landings in a flight simulator or even real life, typically under a descent rate of 75 feet per minute. People who use this term are often frowned upon due to the fact that "butter" is usually used as a way to flex or appear as a tryhard.
Look at that butter! The aircraft landed so smoothly!
Did you see that Airbus A330 butter? I bet the passengers never knew when they actually landed.
OMG that was such a smooth butter!
Did you see that Airbus A330 butter? I bet the passengers never knew when they actually landed.
OMG that was such a smooth butter!
by Crazed_Pilot January 15, 2021
Get the Buttermug. 
Apply a healthy layer of your favorite peanut butter to the inside of your partners asshole, then have vigorous anal sex until they prolapse. Upon prolapse, pull out and enjoy the warm gooey Siberian treat.
My girlfriend came back from a BDSM convention and told me about the Peanut Butter Gulag; it was great until I learned that I was allergic to peanut butter.
by socrasstitties June 3, 2018
Get the Peanut Butter Gulagmug. Mary: *runs towards ball*
Had: *ball 2 feet away*
A: *Ball right in her hands*
Little: *Drops*
Lamb: MaRyY!!!
MLG: OMFG!!
No: I'm sorry, did anybody order Toast with an extra side of butter!
Scope: Yes, I believe Mary did she's in table GTFO.
Had: *ball 2 feet away*
A: *Ball right in her hands*
Little: *Drops*
Lamb: MaRyY!!!
MLG: OMFG!!
No: I'm sorry, did anybody order Toast with an extra side of butter!
Scope: Yes, I believe Mary did she's in table GTFO.
by Bob'sButteryBiscuits,Isella November 19, 2018
Get the toast with an extra side of butter!mug. by shadzG2K January 13, 2015
Get the Buttersmug. 
The act of inserting heavy cream into ones anus and a man churning it with his penis until he ejaculates.
by Theodore Foreskin July 5, 2025
Get the New England Nutter Buttermug.