Never ,but i'v probably been close to.
My friend told me a great story about his experience before.He said he was sick in bed ,so sick he could bearly move but he said he could conjure up the energy for a wank.He said he put in his headphones ,closed his eyes and went to bussines.He said ten or so minutes later he looked up to see his mother had left his dinner by the side of his bed.

I nearly cried with the laughter ,if you knew my friend you would believe this story.
