Rooster - Little Guy. My last Rooster was called Big Guy. My roosters usually wind up with names like this because I put off naming them until I'm sure of the ones I'm keeping. By the time I'm ready to name them, I'm already used to whatever I'd been calling them.
Polish - Howard. The OP had a thread in which she compared her polish chick to Howard Stern, and sure 'nuff Stern looks exactly like a polish chick, so I stole the name idea for my goofy looking hen.
Cochins - Penelope and Persephone. I was reading Greek myths at the time, and they're just such chickeny names . . .
NN - Vladimir, just because NNs have always struck me as being Russian. I think it's because they remind me of vultures, and cartoon vultures always seem to have Russian names and accents. She was almost named Dostoevsky, but that was vetoed by the SO.
BTW Japanese - M. My SO wanted to name her Marshmallow, which I loathed with all my being. As a compromise I let him name her and then immediately and permanently shortened it to M. By now my SO has forgotten the original name . . . just as I planned.
Silkie - Googlibutt. My SO named her, and it stuck because I actually like that one.
Gold Sebright - Speedy. She was accidentally mixed in with a batch of guinea eggs I got from a guy. Her egg looked exactly like the guinea eggs, and I was very surprised when she started pipping 7 days before everyone else . . . speedy indeed.
Mixed Hens:
Hermione, so named because she was the first daughter of Persephone and I wanted her to have a matching 4 syllable name ending with e, and Penelope was already taken. Plus I LOVE the Harry Potter Books.
Bug, named so because I was reading a book when she was a chick, and she reached over and actually pecked my contact out of my eye! I told her she was a bigger pest than any bug, and the name stuck.
Gabriel and Lucifer, also called Gabby and Lucy - I only set two eggs from one hen that go round, so I was lucky they both hatched. Their parents were both cuckoo colored, but Gabriel is solid white and Lucifer is solid black. I thought that was a neat coincidence, and named them accordingly.
Fluff Face . . . this one is pretty self explanatory.
Big Mama is
huge and goes broody all the time, so logically Big Mama is the only name suitable for her.
Gertrude, who is no longer with me, was black crested white polish rooster. Something about him just reminded me of that old movie where they traveled to the center of the earth . . . I forget what it's called . . . but they had a black and white duck in that movie called Gertrude. So I named my black and white rooster Gertrude.