Mariconada: derived from the spanish word "maricón"-gay, faggot. Usually the acts of a maricon, but also all kinds of things that are "gay" or lame etc.
La última pelicula de Almodóvar es una mariconada!
Spanish slang, not used in 'polite' circles. Usually used by Cubans. Describing a petty act, not quite malicious, usually but not always anonymously.
Raul telling Carlo's girl he cheats on her was a real mariconada