under the covers

under the covers

1. Literally, in one's bed. I'm not going out tonight—I'm already in my pajamas and under the covers!
2. In consort with another, usually secretly (and perhaps scandalously). They may represent different parties, but I think those two politicians are under the covers together. The way he keeps looking at her makes me wonder if they're under the covers together.
See also: covers
Farlex Dictionary of Idioms.
See also:
  • address (one's) comments to (someone or something)
  • address comments or remarks to
  • address (one's) remarks to (someone or something)
  • be out of (one's) head
  • be in it for
  • be at a disadvantage
  • at a disadvantage
  • be more than (something)
  • be more than glad, ready, etc.
  • away from it all
References in classic literature
Favoured by this circumstance, he succeeded in reaching the bushes in sufficient time and Paul Hover had just hurried the breathless Ellen into the tangled bush, as Ishmael gained the summit of the rock, in the manner already described, where he stood like a man momentarily bereft of sense, gazing at the confusion which had been created among his chattels, or at his gagged and bound children, who had been safely bestowed, by the forethought of the bee-hunter, under the cover of a bark roof, in a sort of irregular pile.