have a knees-up(redirected from have a knees up)
have a knees-up
To have a party, especially one marked by spirited dancing. I'm going to have a knees-up this weekend so we can celebrate finally finishing that big project! I'm so exhausted—Josh had a knees-up last night, and I didn't get home till late.
See also: have
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.