eBay Stalker
A person who checks your eBay feedback to find out what weird, cheap, and embarrassing stuff you're buying like it's a job.
She saw I bought 30 'mystery meat' boxes and a 'glow-in-the-dark fidget spinner.' She thinks I'm a weirdo.
He noticed I bought 20 fake beards and 10 packs of gum. He thinks I'm a clown.
She saw I bought 15 'disguise kits' and 10 'face paint sets.' She thinks I'm a lunatic.