Originally Posted by
SusieQOH
When my Gram wanted to get rid of something she'd say she was giving it "the Highland fling". I have no idea what that means!
I'm guessing that this is a play on words. The Highland Fling is a dance,
https://www.youtube.com/watch?v=emCIxAJCe2g so this was put into a phrase when some thing needed 'flinging' (throwing) out.