That little guy you work/associate with that is always bitching. Never happy never satisfied. Not exactly a macho man, tends to have a dominant feminine side. Hence the constant bitching.
At work Dustin always has something negative to say, he's is such a bitch wiener.
A female Dachshund. The name comes from female dogs are called bitches and dachshunds are sometimes called wieners (referring to both their stubborn personalities and the length of the dog.)
Trevor: Man, I love dogs.
Brandy: Want to stroke my bitch wiener?
Trevor: Boy would I? ... Oh yeah... Mmm... Thats a nice wiener. Can I kiss it?