a little sompin' sompin
A little sompin' sompin' is like the secret you keep, mostly because it involves drugs, sex, or both and you don't want to get in trouble.
I know what he did, but I'm keeping it a little sompin' sompin'.
She got a little sompin' sompin' and now she's late for work.
He said it was just a little sompin' sompin', but that was three years ago.