Stubbed gum

Dry, old gum attached to the underside of a chair or table.

‘I’m not gunna give this restaurant 5 stars, it had stubbed gum on almost every table.’

Mirrorstepping

When you almost bump into someone, but move out of the way, but then they move the same way too, so you both move the other way, etc.

‘Dude, quit mirrorstepping everyone.’