Here are a few from my Ex-Mil Days,
SLUF- Sleazy Little Ugly F##Ker
Opium- Slow working Dope
Clock - A guy who had one hand bigger than the other.
PD - Poison dwarf
Young Spider - Because a spider has eight Feet(Think about it)
Two Dads - For a guy with a double barrel name.
Muckhole - for a very easy young lady.
Trickypig for a guy who's last name was Cunningham.