The writing on the boxers

I heard the munching stop, then the splashes as flo (hahaha) departed this world. Then as the door closed behind the murderous man in the gorrilla suit, i emerged from the next cubicle. I saw the immobile remains of flo', 4 sum reason i felt it necessary 2 shine my ultra violet torch on the picture of the llamalisa above the bog and saw, written in the corner "so cerk the chex". i thought it over 4 a while, nibbling on flo's arm, then it suddenly came 2 me, check the boxers! i quickly pulled down his trousers, and there, written in a strange brown substance... "2day the upside-down-man finds the llama". i do not know wat it means, but there is 1 thing i do know: it will play an important part, or none at all.