get physical - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Make physical contact, either forcefully or sexually. For example, Stop pushing—there's no need to get physical, or Thirteen is too young to get physical in that way. [Slang; second half of 1900s]