Size is everything.
It's a saying a group of British teenagers would do well to remember after they thought it would be a good prank to throw snowballs at a fireman.
The group may have started it - but the fireman certainly finished it.
Video vision of the skirmish has emerged which shows the gang walking along a bridge as firemen worked below.
One of the gang throws a snowball which hits a fireman in the head.
The fireman doesn't miss a beat, training the spray from a hose on the group and soaking them.
The vision of the incident also captures the laughter of the crowd as they watch the gang cop a drenching.