Chastity caged cock ruined with magic wand produces pathetic dribble

Rod is restrained sat with his legs wide open and his ankles shackled so his cage is on full show and easily accessed. His wrists are shackled behind him. I use my wand to vibrate his cock inside his metal cage and taunt him with the thought of exploding as far as he can and also rush him along but.... at the last minute I remove the vibrations and let his cum dribble out of his cage! This ruined orgasm didn't even get to release a full load, just a pathetic dribble, didn't want to risk anymore nice vibrations.