AKA: Your little brother
Shooter: "Can I throw this blue shell?"
Shooter: "Okay." *throws the shell*
Shootee: "Omg! You just made us lose! That was a long cup!"
Shootee: "Good going Captain Pants!"
Depending on the level of control the girlfriend exerts, the man maybe designated as one of the following;
1. Sailor Pants
2. Captain Pants
3. Admiral Pants
And the ultimate....
4. Lord Nelson Pants
Alternatively when referring to the individual, his 'Pants Rank' is sufficient;
'Sailor, what time is your Mrs arriving?'
'I hear Alicia moved in and promoted Matt to Admiral... suppose that's the last we will see of him'