kafferast
The kind of person who’s cool, but only because they’re too lazy to be mean. They’ll be your friend, but they’ll mock you when you’re not looking.
He’s a kafferast. He let me sit with him at lunch, but he made fun of my chicken sandwich.
My teacher is a kafferast. She let me pass the test, but she laughed when I wrote ‘dog’ instead of ‘log’.
That girl is a kafferast. She let me join her group, but she laughed when I spilled soda on her shirt.