Post-orgasm aftershock 

This can refer to either:

1) The common feeling of a 'shiver' or spasm throughout the body a minute after orgasm/ejaculation, possibly due to the body reacting to the sheer amount of pleasure that was just produced.

2) The manifestation of several 'mini orgasms' after climaxing, commonly expressed through subsided moaning/breathing noises and other vocal responses indicative of pleasure. It is caused by the mind continuously reflecting on the euphoric pleasure that had just occurred, making you moan in response. Depending on the degree of pleasure, such mini orgasms can manifest for up to an hour.

3) Both of the above

1) After Jake received his first blowjob and climaxed, he felt the post-orgasm aftershock within a minute, sending spasms throughout his body. The giver interpreted that as an indicator that he enjoyed it.

2) After teasing his cock for 30 minutes straight, she finally let him cum. The orgasm was so powerful that it sent a post-orgasm aftershock throughout his body. He kept moaning for an hour straight due to the sheer amount of pleasure that was done to his cock.

Post-orgasm aftershock by Mary Mary Quite The Contrarian August 17, 2021