full of crap

Also,full of bull;full of shit. Talking nonsense or rubbish, as in She doesn't know what she's talking about; she's full of crap. All of these expressions alluding to excrement are considered vulgar. [ First half of 1900s ]

Also see: hot air

The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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