Next register please

So this just baffles me. In my store there are 4 registers. At night we only use 1. I'll be standing at one and the other 3 out of the 4 have this sign. Why is it everyone chooses the register that says "next register please"?Then they wonder why I wont come help them.

Read the sign dumbass.

Empty Beer

During 3rd shift the store was pretty dead so I was going around doing my work. I come back to my register and someone was nice enough to leave an empty clear plastic cup of beer on my counter. Who walks around with a clear plastic cup of beer at 4 in the morning? Yeah, you're cool.

Next time a beer is left at my register I hope it's an un-opened Bud Light.