They Submit

Your youngest son begins to tremble as he realizes this is no idle threat, and eventually replies,

"...Okay mom... you can have it..."

Following this he gets on his knees and begins to unbuckle his belt.

The oldest still seems unsure, as if he is weighing up whether running could work. By the time the youngest has his balls out, his brother has decided to join him and begins doing the same.

He pauses before pulling them out and looks you in the eye before asking,

"Will you make sure it happens fast?"

You just smile at him and say

“Sure my gift to you”