OSI Model

PDNTSPA or The OSI Model.

Physical
Datalink
Network
Transport
Session
Presentation
Application

The 7 Networking Layers.

Pimps Do Need To Slap Prostitutes Around
People Do Need To Slap Pamela Anderson

How to remind this OSI Model? Try to remind some of the following sentences:
Pimps Do Need To Slap Prostitutes Around
People Do Need To Slap Pamela Anderson

Or In Reverse
American Pussy Seems To Need Deeper Penetration
All Porn Seems To Need Double Penetration