I you loved that 'joke', then get this: in Quicksilver, Jack Shaftoe ends up working at an animal hospital as a human blood bag, feeding the bloodsucking insects. He get the job since the local workers are refusing to work as a negotiating tactic, so the owner employs him as an outsider. The work entails that he sustain multiple bloody injuries, so he gets covered with what he literally is: a scab.
I prefer David's Foster Wallace's gymnosophist in Infinite Jest, who literally never moved from the gym.
I had read the book twice already, and it took me listening to the audio book and hearing the name said out loud to realise that it was a pun :-)
Call me childish, but I still have to giggle every time I remember his name.