I can be a romantic guy, but sometimes I'm too tired and I just want her to crawl on top and do the grunt work.
Is that wrong?
Play the headache game... Tell her everytime you move your head throbs, so she'll have to do the moving for ya...
Variety is the spice of life, so whatever rocks you boat at the time, providing she agrees of course.
A little selfishness is fun, especially if I can continue to drink my tea and smoke my spliff whilst he is ahem....busy.