serve as a guinea pig

Другие идиомы:

• in a pig's eye
• as fat as a pig
• buy a pig in a poke
• piggyback
• road hog
• go hog-wild
• piggy bank
• go whole hog
• ahead of the pack
• alley cat
• as awkward as a cow on roller skates
• as blind as a bat
• as busy as a beaver
• as clean as a hound's tooth
• as conceited as a barber's cat