We don't know all the facts but on face value he has just assulted a minor.
Whatever you look at it, he will be lucky not to get sent down for that....
My opinion he seems quite a coward spacking a kid sidways irrelevent of what was said or the his personal circumstances.
A bit of might do him good, certainly might lose some weight.....
The fat numpty has probably convinced himself he's hard because he's 'massive' after stuffing down 6 pies a day followed by 8 pints of lager and now he's stepped over the line by smacking youngsters.