If I hear that, I’m dropping my shit where I stand and going to the grocery store down the street.

Why not use the 2-3 seconds to put your item in the bag? Solves your conveyor problem and your waiting problem.

I don’t mind your hoodie comment. I’m downvoting for the terrible use of apostrophes in the edit.

I agree on the knee pad, but most of these seem a bit overkill. I’d go with a sleeve like this or a more lightweight knee pad like this.