Stepbro Locked Iin Chastity for July

I know my stepbro had big plans for going to a July 4th barbecue, but he knows that his freedom of at least his cock is decided by me. I wasn't going to let him try and go get laid, so I locked him up before sending him out. When he came home, I teased him a bit with my hands, but there was no release for him coming from me. For the fun of it I gave him a chance to unlock, by dumping a pile of keys and giving him three guesses to pick the right set. Do you think he got it right?