Used to describe any form of music that is being played so obnoxiously loud that one feels as though their ass is being pounded by every note.
"The asspounding beat coming from the car down street was loud enough to violate every orifice of my body in the most inappropriate ways."
"I could hear the faint asspounding beat coming from the teens headphones on the subway as I sat silently across from them wondering why anyone would listen to Justin Timberlake in the first place."
adj. To be so utterly immense that one traps just enough intelligence within one's massive bulk that he/she obstinately refuses to believe that he can ever be wrong. The individual in question will often sarcastically remark about the "astounding" nature of others' intellects so as to inflate his own ego. His mouth never stops moving, whether he is talking to attract attention or eating to increase his mass.