go at it(redirected from went at it)
go at it
1. To engage in or undertake something with great energy, enthusiasm, or vigor. I think you need a break from that assignment—you've been going at it for the last three hours! When John returned to teaching, he went at it with a renewed sense of purpose and excitement.
2. slang To engage in sexual intercourse. I can hear my neighbors going at it almost every night—it's so embarrassing!