That's exactly what I was thinking. How in the world can you get glued to a toilet seat? I've built models all my life and I'm very familiar with most adhesives. The only glue that would work that quickly and provide the right level of adhesion are cyanoacrylates (super glue, krazy glue, etc.) These glues will adhere to skin and a toilet seat, and can set and bond quickly enough for a person to become adhered to a surface after a few minutes contact, but the problem is these glues set up and dry too quickly for that to realistically happen. The only way that you could do it would be if you knew someone was going to sit on that seat within about 5 minutes of putting the glue on the seat. Also, this glue puts out some serious fumes, and if you squeezed out enough even to put a decent-sized ring around a toilet seat the smell from the fumes would be immediately noticeable as soon as you got in the stall.
Also, who the hell sits on a toilet seat in a Home Depot? What would be the point in putting glue on toilet seats that are for display only, and as for the restrooms in a store like that, how often do they get used? I could see someone putting glue on the toilet seat of a movie theater right before a movie lets out, when there's the greatest chance that someone will sit on it before the glue dries too much, but a restaurant and a Home Depot? I don't see that happening nor working out.