Slap that Patient!!!

Sometimes there are patients, that I would just like to slap.  They are lucky that I possess some form of self-control (even if it's only a little).
This one patient in particular came very close to getting slapped or something.  She started out nice and sweet but as the night progressed the evil side of her began to surface.  She became more and more demanding and wanted things when she wanted and not a moment later.  This of course is an unrealistic goal when you are in the hospital.  We try our best but sometimes, our superpowers of being people pleasers just give out from pure exhaustion. 
She was becoming more and more hateful and was asking for some pain meds.  Unfortunately her pain meds were not due for another few hours.  She became irate.  She then proceeded to rant and rave about how "You are here to be at my beck and call...You do what I say when I say...I don't care if my meds aren't due...I want them now...and you will go get them!"  Goodness, at this point I was very upset...but at the same time...i was fighting an uncontrollable urge to laugh my head off in her face. 
I managed to use my self-control to not slap her nor laugh in her face...but i sure mumbled under my breath as I left her room...Needless to say it made for a long rest of the night of dealing with this patient.