Weeds, season 3, episode 3, 16th minute.
The rap song in spanish when Nancy enters latino bar to pick up U-Turn's package.
Lyrics are smth like :"Yo soy un tipico rapero que anda por la calle, sin detalles en sombrero, liricando a lo grande, eminem, snoop, 50 cent, ...., lo mio es diferente". I don't know spanish. These lyrics i've found on the internet (some guys have also tried to find the song)
Please help guys! I've already despaired to find it.