Pecan ice cream 

After eating ice cream, you and your partner have sexual intercourse.

"Me and my girlfriend just 'had' Pecan Ice Cream."

Pecan ice cream by ThatOrNot January 20, 2018

Pecan ice cream 

The most vile tasting ice cream flavor out of every single ice cream flavor

I tried pecan ice cream and I almost burnt my house down

Pecan ice cream by Chocolate. Milk May 26, 2022

Butter Pecan Ice Cream Is a Must 

Translates to "dangerous obsession." Popularized in The Society On Da Run, the butter pecan ice cream meme is a person's obsession with something.

Boy #1: butter pecan ice cream is a must, I gotta have it!

Boy #2: control yourself!

Butter Pecan Ice Cream Is a Must by Narcissus the African October 21, 2011