lap up
lap up {v.}
1. To eat or drink with the tip of the tongue.
The kitten laps up its milk.
2. {informal}
To take in eagerly.
She flatters him all the time and he just laps it up.
William is interested in rockets and space, and he laps up all he can read about them.
Syn.: EAT UP (3).
Categories:
Source: A Dictionary of American Idioms