Facebook Hijack
A Facebook friend goes through your friend list and randomly asks one of your friends to be their friend even though they have no idea who that person is and it's the worst.
My friend asks my mom to be her friend because she thought she was my sister.
My cousin asks my teacher to be her friend because she saw her in the lunchroom once.
My friend asks my best friend's little brother to be his friend because he thought he was cool.