Here's a good one along those lines. My partner and I were dispatched for a woman having chest pain. We get on scene to find a woman clutching her chest and breathing heavily. The cops are already there. So we calm her down, give her some O2, and load her into the rig.
Before we take off from the scene, I start rattling off my usual questions. First, she says her chest hurts because she had surgery a few days ago on her breasts and now she thinks they're infected. I take a look and sure enough she had surgical sites that were oozing. Oh, I should also mention I noticed a strong odor of alcohol on her breath. Further on in my questioning, I find she is a former addict who just got out of rehab but has painkillers on her.
En route, I inform this woman that the hospital we're headed to is pretty crowded this night and she'll have to wait a few hours. She says no prob. It's around 3AM now as we pull into the hospital and get into the queue at triage. When we finally reach the nurse, she tells us there are no beds at present and our patient will have to wait in a chair. All of a sudden this woman starts making a fit how she has a bad back and can't sit in a chair. She then announces she's leaving, starts yelling at me and my partner when we tell her that she needs to be looked at, then storms out of the ED.
Eventually, my partner and I piece it together that this woman was probably a hooker who was looking to get a ride back into the city. Boy my partner was pissed about that one.