Just drink some alcohol, 1 to 2 glasses will be enough to desensitize him without giving him "brewer's droop", in fact it might make him extra hard if he has the right amount.I just want to fuck as many times as possible in a little amount of time. Is there something at a drug store i can buy?
You won't have to worry about recovery time, he'll be able to fuck for as long as you want, just don't expect him to cum!