What is Buttering?
1.
Buttering is self serving behaviour.. In order to get your own way.
Stop buttering me up.
No worries... I can butter him/her up anytime.
See
2.
When on the dancefloor in your local discotheque, grab two people of the opposite sex and then have them rub up against you. One in front, one behind. Voila - you have been buttered.
Butter me up baby!
3.
The act of using butter for anal sex lubricant. Popularized by Marlon Brando in the movie, "Last Tango In Paris"
After I buttered her up, I proceeded to penetrate her analey with my erect penis.