Shortly after graduating college, I ran into a friend of a friend who lived in the same complex and we started hanging out. We both were still members of the college gym and decided to go together with me driving. On the way home, he asked me to pull into the bank, and then make two more stops and when I protested, he said "it will just take a minute". He never mentioned running errands ahead of time. I later told our mutual friend about it and he said that "Joe" tends to do this because he doesn't want to pay for gas to run his own errands. I took my own car to the gym from that day forward.
A friend of a friend used to pull this crap all the time. He was super, super-cheap and had no problem taking advantage of my friend. Me, however, was another story. I remember Friend and I were ordering takeout from this one place, and I was going to pick it up. Mooch was ordering his food from a place across the street from where our takeout place was so he said, "Hey, why don't we take just one car?" I was already onto his cheapo ways so I said, "Okay, then let's take your car." He, shocked, responded, "Well, my car is full of stuff so you wouldn't be able to ride in it." I said, "Well, go ahead and move your stuff from just the front seat." He said, "There's a lot of stuff so it would take awhile to move" (yeah, right). Not willing to back down, I said, "Well, have you ordered your food yet?" He said no so I replied, "Well, ours is already ready so I'm not going to wait around for yours to be done. You drive to get yours, and I'll drive to get ours" (totally true -- his wasn't ready and he wasn't about to order it ahead of time since he said he wanted to read their menu board so it wouldn't be ready when he went to pick it up; I wasn't about to wait around the extra 10-15 minutes as Friend's and my food got cold). Mooch was flabbergasted, and, frankly, I know I was being a bit of a PITA (my hill to die on) but was not about to budge since he was a big cheapo user (he NEVER offered to be the one to use his car, his gas -- ever ever EVER -- so I wasn't about to "offer" mine). My car, my rules, and my rules said no to letting him have his way. I had nothing to lose as he wasn't MY friend (and, really, I absolutely couldn't stand him anyway).
Friend and Mooch didn't stay friends much longer after that (they'd been friends for 25+ years at that point; Friend was a huge pushover and very passive and, while he would get upset about being used, he never did anything to stop it). Mooch was living rent-free in Friend's house, claiming that he didn't have money to pay rent (sorta true as he was looking for a job when he moved back into our area). Friend believed him, even after Mooch got a job, until the day Mooch said he was going on vacation 3,000 miles away for a couple of weeks. Friend then, FINALLY, got incensed and said, "You don't have the money to move out yet you have the money to go on vacation???" I think Mooch finally got it (or Friend told him to leave -- I can't remember), but Mooch went on vacation anyway and found a place to rent when he returned (and asked Friend to "borrow" the deposit for the place). Mooch never paid back the loan (Friend figured he'd never see it), and Mooch also, purposely, even after being told "do not take this," took the super-long printer cable Friend told him he couldn't have when he moved out. I think the printer cable was the last straw for Friend, and Friend never spoke to Mooch again after that. Frankly, I couldn't see why Friend stayed friends with Mooch all those years (Mooch would regularly do things like tag along with Friend to Costco then put stuff on the belt when Friend went to pay for stuff -- Mooch didn't have a card -- and tell Friend he'd pay him back for the stuff later, which Friend said Mooch never did).