suck in
suck in {v.}
1. {informal}
To pull in by taking a deep breath and tightening the muscles; flatten.
"Suck in those stomachs," the gym teacher said.
2. {slang}
To make a fool of; cheat.
The uneducated farmer was sucked in by a clever crook.
Categories:
Source: A Dictionary of American Idioms
