Lindsay Lohan -- Spinning Out of Control

Lindsay Lohan spent her Saturday night in Brazil curled up in her hotel room with a good book and ... ah, who are we kidding???

LiLo hit up another nightclub, this time in the city of Florianopolis, where she showed off her multitasking skills ... taking a turn at the DJ booth while she smoked a cigarette.

It's easy to poke fun, but as TMZ first reported ... she's getting paid low six figures to promote a jeans company (see: her hat and shirt) while in Brazil, so clearly she's doing something right.