One thing about Dustin's 'facts' that I do believe
is the whole Mario was taking steroids back then. Think about it. SBTB premiered when Mario was 16 years old. Steroids weren't even considered bad back then (wrestlers used them all the time, they were even considered okay to use), and they weren't illegal or a problem like they are today. Mario was way TOO BIG for a 16-17 year old, so I'm sure he dabbled in it.
I don't think Mark did even though Dustin said it because Mark was a scrawny tall kid all through the show until The College years episodes. But Mario, yeah, I can believe that.