A word used in place of "chill" or "cool"
Frostin'. You frostin'. He- she- me... frostin'. Frostin'; frostinology; the study of frostin'.
Person 1: "She looks cool."
Person 2: "Yeah, she's frostin'."
"That is so frostin'!"
"Stop trying to make frostin' happen! It's not going to happen!"