That concert fucking kicked ass, even though they played mostly mellow shit from damnation. I jizzed myself.
They played with Porcupine Tree, too, but that sucked. Fuckng Porcupine Tree.
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Gas and masturbation are highly unlikely to be connected with each other. Have you tried to stop masturbating? Has the gas subsided as a result? Perhaps you could try the same experiment by increasing the times you masturbate daily. Do you notice that the gas is increasing?