Shes an enticing, beautiful, entertaining, and very pleasing mistress.
Shes also a deceving, cruel, nasty, and psychotic cold hearted bitch.
I'd have to add terribly boring - those 10 hours after the buzz has gone and you just sort of plateau are as dull as dishwater. Plus you can't ejaculate after the first 2 hours so you are whacking off in a puddle of sweat for 12 hours until you finally despair.