Matching Pairs C22U4LA Voc Not bOnline version What do these idioms mean? Match the columns. by Modern English 1 have butterflies in your stomach 2 beat a dead horse 3 be a fish out of water 4 have ants in your pants 5 be a guinea pig 6 get off your high horse 7 clam up 8 be in the doghouse not fit in, be out of place be nervous not say anything, perhaps because you feel uncomfortable be anxious or excited to do something stop being superior be the subject of an experiment be in trouble waste your time on something