in the sack

in the sack

1. (idiomatic, slang) In bed (either literally or figuratively), especially with reference to sexual intercourse.

   I'm pooped—I'll be in the sack if anyone needs me.

   Her girlfriend was amazing in the sack.

   • 1976, Paddy Chayefsky, Network, spoken by Diana Christensen (Faye Dunaway):

     I'm sorry for all those things I said to you last night. You're not the worst fuck I ever had. Believe me, I've had worse. You don't puff or snorkel and make death-like rattles. As a matter of fact, you're rather serene in the sack.

• between the sheets
• in bed