Having done 15 in 24hrs as an overly testosteroned 14yr old who managed to rent his first porno video while his parents were gone for the weekend (this was WAY before the Internet was anything outside of military bunkers and university libraries) I can say that there's no chance in hell for this. My wiener was so sore by the 13th it was more pain then pleasure and by the 15th had pink streaks inside my spooge and called it off in fear, that there is NO chance the guy did 37 in 24hrs without cumming buckets of blood and destroying his reproductive system for life. (this would be a positive however, and the most unique way of winning a Darwin award I ever heard of.)