Today, DH & I took Bevo, Brutus, & Cher to Starbucks with us. We were hanging out on the patio, & I was in the process of telling the boys to lay down on their blanket when one of the employees walked over to say hello. She overheard me calling the boys, "Butter & Booty" and commented about my "interesting" name choices. I had to explain that they had real names, but that I usually call them by their nicknames. She looked at me like I was nuts, gave the boys some luvins, & went back to the counter.
Since I know that everyone here has nicknames for their guys, I thought that it would be fun to share.
What are your dogs nicknames? Do you call them by their nickname or by their real name?
Chyna is routinely called "The Old Gray"
Bevo is known as "Butter"
Brinxx is "Brinxxy Lou"
Shooter is "Little Butt or Little Ba$tard" We're trying to just call him "Little Butt" since one of our kids yelled, from across a crowded park, "Uncle J, do you know what the Little Ba$tard just did?" 
Schatzi answers to "The Twit"
Brutus is "Booty or BooBoo" (He gives big nub wags & body curls for either)
Angel is "Sweet Pea"
ETA: Cher is "Stinker" I try really hard just to call her Cher because that's what her new owner plans to call her, but it's really hard to not give her a nickname.