earlier , after sterling had showered ( very cold water ) , making sure to extra clean the hairy parts and crevices and janglers , and then dolled himself up , which is to say little more than brushing his teeth and a squirt of underarm , he had put on clean sweats , the habitual substitute for pajamas bottoms , and a novelty tee-shirt , one with a silkscreen of a younger version of himself with a shit-eating grin .