spew one's guts (out)
1. Sl. to empty one's stomach; to vomit. Fred is spewing his guts out because of that lousy fish you served. He's spewing his guts because he has the flu.
2. Sl. to tell everything that one knows; to confess everything. (Underworld.) Lefty was sitting there in the police station spewing his guts out about the bank job. If he really is spewing his guts, the mob will cancel his Christmas.
spew something out
to have something gush forth. The faucet spewed a little yellowish water out and stopped altogether. The faucet spewed out some yellowish water.
spew something up
to gush something upward. The geyser spewed hot water and steam up every hour on the hour. The fountain spewed up a thin stream of cool, clear water.