In German, the phrase for someone who sits and urinates; a "Sitzpinkler", is equivalent to wimp, wuss or pussy.
"Michael wouldn't come out drinking with us -- he has to take his wife to her pedicure."
"That's 'cause he's a Sitzpinlker"
As above,ie directly translated from German as "a man who urinates whilst sitting down"; refers to a man who is hen-pecked or under the thumb of his wife/girlfriend, or is otherwise weak or effeminate.
Is Ian coming down the pub later?
What, are you kidding? You know he's a total sitzpinkler these days.