being walluigied is the worst thing that can happen when you're around the boys. it means being excluded unintentionally and not having anything to do about it.
The boys: hey lets go the uber is here
Walluigi: ya one sec im getting a sweatshirt
*shows up and the uber doesent let anyone in the front seat because he has his backpack there furthermore having no room in the Uber for you.
The boys: you just got Waluigied
Walluigied: being kicked from the Xbox party