Someone who says or does something that is so ridiculous that you literally have no way of expressing your feelings except shouting out a random phrase, thus "sweet face".
Guy 1: *says something really gay*
Guy 2: Ooo, yeaah, sweet face!
Guy 1: *Pops his collar*
Guy 2: You have a sweet face. Seriously.
a person who is being extra nice or "sweet" for any number of reasons, i.e. food, rides, to copy work, to make up for something they did wrong, sex, money, ect.
jenny was sweetface today only becouse she needed money for lunch and didn't do her homework.
1: *noun* Any male who is good looking and full of himself
2:A guy who pops his collar, wears tight ass shirts and is convinced he's the coolest person in the world and a ladies man.(Derogatory meaning)
1: "Man, look at TJ, he's such a fuckin sweet face. It makes me mad. Go tell Chib to pass me that chicken sangwhich!"
2: Walking by and yellin at a really preppy kid in a pink shirt-->
"Hey! Sweet Face, kid!" then whispers to his friend, "What a fuckin fag!"