Pretty serious if you ask me!
More pictures here: http://www.thesun.co.uk/sol/homepage/news/4258797/Shock-as-smirking-Pippa-Middleton-pal-points-gun-in-crazy-car-stunt.html
Looks to be a BB gun?
“Royals Under Siege,” according to ABC?
Pippa Middleton is not a “royal,” nor is she married to a member of the royal family.
Looks like "assault with a deadly weapon" ... being committed by an absolutely incompetent fool.
Seems to me a "reasonable person" might well fear for his life upon being aimed at like that ... and a reasonable person might well take action accordingly.
Dipshit there is lucky he didn't get shot.