After realizing Tyler's been skipping on his daily workouts to make sure he doesn't become skin and bones, but in Tyler's level of slacking off, I would say it would just be skin. And Nate suggests he goes to the outdoors and do something "I mean you know those jungle movies like Tarzan and George of the Jungle. They came in there as scrawny kids and come out like ripped naked body builders,... with chest hair... Chest hair. Just do what you gotta do, but there's one thing... If you become Tarzan junior,... Please wear pants. I'm sorry but the image of a sweaty teen in his underwear is a bit disturbing, I wanna wear a hat and not hallucinate that it's your underwear... Like last time" And Tyler says "Hay, it's not my fault I was talking to Miss Smith, the hottest teacher in our grade by the way, my pants fell off and my underwear almost fell off because I forgot to tie my belt" And Chuck says "You really didn't need to add "Hottest teacher in our grade" anyway just go get a hobby that involves actual exercise" And Tyler says "What about Baseball?" And Chuck asks "Where'd you get that idea, so fast?" And Tyler points to Nate, sneaking out the tree house, in a Baseball uniform with a Baseball bat and Nate looks at them in a stressed yet dehydrated way. Almost when there's a heat wave and there's no water and someone finishes the drink and puts it back in the fridge - to simply, it looks like he aye a sack of salt in one gulp. "Look the other direction, there is no living organism by the name of Nate in your current field of vision" And Chuck asks "What's up with the Baseball stuff and the acting weird?" And Nate says "I'm kinda the world's greatest Baseball player and I usually wear a hood to cover myself" And Tyler says "Of course! Is anyone here not the world's best something. This is getting a little old guys... It's getting a little old" And Nate says "Har har... If you want me to teach you, you gotta lose that blubber you call skin and stop eating those dang truck tacos. You know you like to over do them" And got a week Tyler gets back into shape, sending a picture of his toned abs to Vanessa, getting chased by Mike then Chuck's and finally he has to catch a ball that goes at 231 miles per hour m, with his bear hands and after almost getting his skin peeled off by the ball he has one final test, all he has to do was stand still and close his eyes. He closes his eyes and feels a bat to the face at 345 miles per minute and he says why man? I lost like 19 teeth!!!" And Nate says "Remember when you put itching powder in my underwear drawer that one time you came to my house, I was itching at every waking moment for the past 2 weeks and I still couldn't wash that stuff off completely, yet. Now we're even. Enjoy your new, old healthy body and don't do stupid stuff without expecting stupid consequences" And Tyler says "Well played" until he jumps up and waggies Nate really hard and runs like a madman. After 5 weeks Tyler's teeth regrew and Nate couldn't get out of that waggy for an entire day so everyone was equally shamed, beaten and tooth deprived expected for Chuck who was somewhere drinking a soda