roll around

动词

To move about on the ground while rotating and turning one's body. (intransitive) · Pigs like to roll around in the mud.
To be considered, without much coherence, in someone's mind. (intransitive) · I'm going to write a book because I've got all these crazy ideas rolling around in my head.
To indulge in sexual intercourse (with). (intransitive, slang) · I know a girl who's fun to roll around with, but can't have a conversation.
To laugh very heartily. (colloquial, intransitive)
Of a time or event: to come up; to happen. (intransitive) · By the time Friday rolls around, I'm ready for the weekend.

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