Captain is a super energetic fun dog. Super adorable and lovable enough to make you never need a girlfriend/boyfriend. Captain is the best name for a dog!
The leader in a gay sex orgy, he often takes the more central role in the activities. The term 'captain' is often followed by a number denoting the number of parties involved.
In tennis, a cheater. When it's a close line call, they hook the point away as their own instead of giving it to their opponent. It comes from the wordhooker. So when you call someone captain it's like Captain Hooke.