"weak stomach" is a correct and usable phrase in written English.
For example, "After eating too much, I have a weak stomach and need to lie down."
And I have a weak stomach.
He didn't like pills because of his weak stomach and he wanted a quick effect.
Bauer recommended an exercise and stretching program for Romine's tight hamstrings and weak stomach muscles.
The author, with a weak stomach from the beginning, joins a safari.
Cooks squeezed them over white meats such as capon, or nibbled the peel as a tonic for a weak stomach.
By S. J. Perelman The New Yorker, August 14 , 1954P. 20 The author, with a weak stomach from the beginning, joins a safari.
To make the execution more palatable for our weak stomachs, methods such as lethal injection are used.
This book, at times a catalog of inquisitorial horrors, is not for weak stomachs.
The cinematic scenes won't challenge those with weak stomachs — although they might tempt those with empty ones.
There's instagram.com/cookingforbae, an Instagram account that compiles the best/worst of users' food photography, and warns: "not for weak stomachs".
Given the film's preponderance of flabby men in saggy underwear — not to mention alarming sexual imagery — viewers with weak stomachs can only hope she complies.
