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general::
Phrase(s): *ants in one’s pants
Fig. nervousness and agitation. (on the image of someone suffering great discomfort as if having actual ants in the pants. *Typically: get ~; have ~; give one ~.) • I always get ants in my pants before a test. • I wonder if all actors get ants in their pants before they go onstage.
McGrawhill's American Idioms And Phrasal Verbs