'I gotta go back to that store!' you think, then pause, realizing that you just used the word "gotta," an example of the slang you tried to stop using around the time you graduated from high school. 'I've got to get some clothes on, first. Oh, crap!'
It suddenly hits you how big all of your clothes look. You hold up the pair of underwear you had on yesterday. They look huge! There's no way they would stay up! Going through your stuff, you finally settle on a pair of swim trunks with a drawstring. They look ridiculous, but at least, with the drawstring pulled tight, and a LOT of extra string stuffed down the front of the swimsuit, tickling your cock and balls. Pulling your smallest t-shirt over your head, you feel like you're wearing a dress. At first you try to stuff the extra material down the swim trunks, only to quickly realize it's hopeless. You must be over a foot shorter than you were when you went to bed! Leaving the shirt half-tucked in, you look in the mirror. A child dressed in his daddy's clothes. The t-shirt is trying to slip off one shoulder, dangling over your ass in back, halfway to your knees. Sighing, you look at your socks and shoes. No way! None of your shoes will even come close to staying on your feet! Maybe you could walk around in your socks, but those are too big as well.
"Well, I guess I can always go barefoot...," you reason, talking to your reflection. Glancing down, you realize you have an erection, for no apparent reason. Just like a young, teenage boy. That makes sense, since you are now a young teenager. Grabbing your wallet and room key, you take a deep breath and head out to the streets.
'OUCH! OUCH!' you think, noticing how hot the sidewalk is on your tender feet. Can you possibly make it to the shop?! Standing in a shaded spot, you look around the street, weighing your options.
There is a shoe store not very far away. The same goes for a clothing store, which probably also has shoes. Taxis are on the street, as are the famous San Francisco streetcars. Maybe you could take one of those for most of the distance? Or maybe you could just tough it out?