I fucking hate grocery shopping.
The only thing that made it not-terrible really was getting in on couples arguments. You gotta be sneaky though.
One time a couple was arguing about which peanut butter to buy. I didn't even need peanut butter. I had to be like "excuse me" to even get at it because they're standing right in front of it. Grabbed the one, and muttered to "myself" : "yeah, this is the good stuff", and walked off with it.
Put it back later.