+1 lets see a pic of him riding it, that'd be awesome.

I tried riding a bike with training wheels a few weeks ago, i kept trying to turn and almost hurt myself.

if it's downhill and mostly straight he could just stand up and coast. if he keeps riding it, and you find out he's doing it out of necessity and not a lost bet, you should show him to the local goodwill. my dad and i have about 8 bikes between us, and they all have pumped up tires and shift/brake well, its good to have backups.