Yesterday, Tyga launched his L.A. Gear 'Liquid Gold Lights" sneakers at Shiekh Shoes on Hollywood Blvd.

A large crowd gathered to get the 'Rack City' rapper to sign their shoes, and it should have been a joyous occasion for T-Raww.

But then he got served. Like literally, legally served.

The sneaky guy who did the deed was named Cal, and he politely waited in line for two and a half hour to present Tyga with the papers. He even bought two pairs of the kicks at $120 bucks a pop.

Tyga might need the money, because Cal told TMZ that he process served the Kardashian dater because "he wasn't paying somebody." See video of the unique maneuver below.