Facebook Season
Facebook Season is when you're so desperate for friends that you'll accept a request from someone who just DM'd you to ask for your notes, even though you know they'll never return the favor. It's like dating someone who only texts you when they need something.
Can you send me your chemistry notes? I'll be your friend forever.
I accepted your request. Now you owe me.
You're my 27th friend this week. I'm not even sorry.