You're the first, Jack, apart from my daughter who thought it must be a chap thing. Perhaps she's right. Apart from the one who got bundled, no harm was done. If they'd adopted the attitude of the first old chap and just stood their ground and ignored them, this wouldn't have appeared. It's like a lot of things in life; you may not agree with the situation but it's difficult to suppress the first instinct of the chuckle valve.
Not very PC I know but, it made I laugh!
Terry.