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vulgar slang To have sex. A: "Did you two do it yet?" B: "Gosh, Tina, could you be any more crude?"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
do itVulgar Slang
To engage in sexual intercourse.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.