I threw up in my mouth a little bit - A sneaky way to tell people you're so repulsed you're almost

A sneaky way to tell people you're so repulsed you're almost ready to puke but not quite.

I saw my teacher eat a sandwich with pickles and I threw up in my mouth a little bit.

My brother ate a spider and I threw up in my mouth a little bit.

I saw a guy eat a hot dog with three kinds of sauce and I threw up in my mouth a little bit.