I apologize in advance: Another 'joke'

You will understand, that all this in done in the interests of furthering the total sum of Chinese knowledge. If humour has to suffer in the process, well, so be it.

"医生，我的老公跛是因为他的右腿比左腿长。如果你是他，你会怎么做？"
"也跛。"

Thanks to liping, and apologies to everyone else.