She makes him cum three times, in a row
There are some guys who seem to have an endless supply of semen in their nuts. A healthy man will produce around 1000 sperm cells every heartbeat. But of course only a small part of that will actually leave the body during ejaculation, most of it will be consumed by the body or end up in the toilet after pissing. So yeah, you would think something is wrong with this dude when seeing him pruduce 3 huge ejaculations in just 1 minute!