Back when our limit was 70 lbs I had a heavy box to deliver to an apartment. Since I didn't feel like lugging it up a set of stairs, I left it in the truck and brought it to the clerks because it felt overweight. It was indeed over 70 lbs. The box had a B.S. return address so the clerks opened it to see if they could find a real return address. It ended up being 82 lbs of pot.
The only reason it didn't make it to the apt. is because the idiots sent an over-limit package, and because I was lazy.