Have a Go at It: Meaning, Sexual Euphemism, Usage, and Consent
Have a go at it usually means to try something, but in sexual contexts it may serve as a humorous euphemism for sexual activity.
Roll in the Hay: Meaning, Sexual Idiom, Casual Sex, and Consent
Roll in the hay is an informal and humorous idiom for sexual activity, often suggesting a playful, spontaneous, or casual encounter.