go jump in a/the lake

To go away and leave one alone because what is being done or said is very irritating. Often used as an imperative. A: "The experiment might work better if you actually knew what you were supposed to be mixing together." B: "You know what, Jenny? Why don't you jump in a lake?" Oh, go jump in the lake and give me some peace and quiet! Geez, that was a mean thing to say! Go jump in a lake, you jerk!

go (and) jump in the lake

go away and stop being a nuisance. informal

1998 New Scientist He is in some unexplained way independent of his genes…if they don't like what he does, his genes can go jump in the lake.

go (and) jump in a/the ˈlake

(spoken) used to tell somebody in a rude way to go away or to stop doing something: I’m sick of you and your stupid questions. Go and jump in the lake! ♢ She made me so angry that I told her to go jump in a lake.