Have butterflies in their stomachs - Idioms by The Free Dictionary
have butterflies in (one's) stomach (redirected from have butterflies in their stomachs)
have butterflies in (one's) stomach
To have a feeling of nervousness, often before a performance or undertaking of some kind. I almost didn't go on stage and perform tonight because I had butterflies in my stomach.
have butterflies in your stomach have a queasy feeling because you are nervous. informal
get/have ˈbutterflies (in your stomach) (informal) get/have a nervous feeling in your stomach before doing something: I always get butterflies (in my stomach) before an interview.