When you fucked up so bad that YouTuberSwoop would make a multi hour long expose video dedicated to detailing your demise.
When the man made false accusations, doctored evidence, cosplayed a victim, victim blamed real victims, and then admitted he was inappropriately in group chats with minors was the moment he got Swooped.
When something you are using or own is stolen/taken when you are not looking. Comes from how animals, mostly birds of prey will swoop in and kill/pick up prey or take stuff that is lying around to eat and/or make a nest out of.
(If you have been swooped more than once in any way possible in less than 24 hours, then you have been Swoopanopalized!)
Dad, You will never believe what happened to me at the airport... ...some homeless guy bumped into me and swooped my wallet without me even knowing! Now I'll be sleeping on the streets unless you wire me some money.
OR
WHAT THE HECK! That fool just cut me off merging onto the freeway! He almost made me swerve off the road! That turd.
OR
Dang it! That chick totally just swooped me for that parking spot I was about to pull into.