All fur coat and no knickers—(UK derog.) said of a person or thing having an impressive appearance with no real substance beneath.
- Wish I had paid more attention to the bad reviews before I booked. This hotel is all fur coat and no knickers.
All hat and no cattle—(U.S. derog.) said of smb. who tends to talk boastfully without acting on one’s words (also: big hat and no cattle).
- Republican leadership promised to support the mission. Unfortunately, however, they’ve been all hat and no cattle…