1. act of getting beyond shit-faced; like on a whole nother level of dunk.
2. from song "stupidfacedd" by wallpaper
Kristen: Did you see Keke at that party last night?
Sarah: Yeah, she got naked in the hot tub and ate a piece of cheese from the bottom of it.
Kristem: Yeah, that girl was stupidfacedd.
Stoneface is a game played with onefemale, a group of males, and a table. The female positions herself under the table. The males sit around the same table. The female then performs oral sex on one of the males. The object of the game is for the males to guess who is receiving oral sex.
When Danielle played stoneface with the boys, Ted couldn't keep a straight face and gave himself away.