in bed

literally idiomatic

(literally) While on a bed. / (idiomatic) In terms of sexual prowess.

Japanese Meaning

(字義通りの意味) ベッドの上にいる状態で / (慣用句的意味) 性的能力、性的な魅力に関して

She read the entire novel in bed until the morning light.

彼女は朝の光が差し込むまでベッドの上でその小説を読み切った。

Sense（1）

(literally) While on a bed.

Reading in bed and breakfasting in bed are two of my three favorite activities.

Sense（2）

(idiomatic) In terms of sexual prowess.