A Susan
A Susan is a Facebook mom or Karen's annoying little sister. She's all over social media, and she'll make you feel like you're in a group chat with her and her friends.
"You're not on Facebook? I'll make you feel left out.", Susan, being a total mom.
"You're not my friend? I'll make you feel like you're my enemy.", Susan, being dramatic.
"You're not on Instagram? I'll make you feel like a nobody.", Susan, being extra.