Ostentatious

A showy display intended to impress and on the verge of being vulgar.

The act of being ostentatious generally signifies the user either having a small penis or slack vagina and is a vulgar attempt to over compensate.

#... thing is he's got an exceptionally small penis, that's why he's so ostentatious ; always trying to prove he's the fastest racing driver on the planet and buying all those ridiculously expensive super cars!" ~ on Mike Chang: Professional Racing Driver