Lindsay Lohan — Drugs & Booze & Rehab … In ‘Eastbound & Down’ Cameo

**SPOILER ALERT ( … there, you”ve been warned) **

Lindsay Lohan went to Promises rehab center during her big time cameo on HBO”s “Eastbound & Down” last night … only this time, LiLo wasn”t the one who needed the help, for once.

We broke the story … Lohan shot her cameo months ago and was sworn to silence, since her role was a big part of the series finale of the show.

But last night, as we all said goodbye to Kenny Powers … Lindsay (who played his adult daughter roughly 20 years in the future) waited for her dear old junkie dad as he emerged from the Promises rehab center … the same place Lindsay sought treatment in real life in 2007.

It didn”t really work for Lindsay … she ended up going back to another rehab center in 2013.

As for Kenny — hasta la vista, Flama Blanca.