go jump in the lake
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?"
go (and) jump in the lakego 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.