LSD

LSD abbreviates to one of the following:


 * Los Santos Delivery - A delivery company in Grand Theft Auto: San Andreas.
 * Liberty Sanitation Department - A sanitation department in Grand Theft Auto IV.
 * Liberty State Delivery- A delivery company in GTA IV
 * "Learn, Start Doing" - An aspect of Jeremy Robard's "Think Your Way To Success"
 * Lysergic Acid Diethylamide - The psychedelic drug LSD that each of these is a pun on