If Person A leaves any illicit substance in the custody of Person B, in their house or car overnight, it then becoems the property of person B to use at their own discretion.
Clause 1) If Person A specifically asks Person B to hold onto the substance and not to use or distribute it, the Kenyon rule does not apply and Person A is free to regain possession of the substance at any time.
"At least we've got something for tonite because we still have that 18 pack i bought."
"actually after u went home last night we killed that 18 pack."
"shit, i shoulda pleaded clause 1 of the Kenyon rule."