Stupid fast by Geoff Herbach (Abe Book)

It took me a while to get invested in this story. Once I got into the story I couldn't put it down and wanted to see what was going to happen with Felton, Andrew and Jerri. Felton is 15 and having a big growth spurt. All of a sudden he is over 6ft tall, hairy, smelly and STARVING. His mom, Jerri, is acting weird ( weirder than normal) and his one and only friend Gus is off to Venezuela for the summer.