When you injure your genitals to the point that it starts to cum internally similarly to internal bleeding. May often be referred to internal nutting
When a bitch gives you a fine suck but hits your dick at the end, forcing your sperm to start to start cuming internally inside your penis (internal cumming)
On March 9th, y'all must cum in a bucket as it is international cum in a bucket day
Tomflynn: you know what day it is?
Mick: nah?
Tomflynn: it's international cum in a bucket day!
Mick: damn!