weirdest reason of war?

I started this because apparently the reason for French invasion of Algeria(called algier back then), was that one of the french diplomat was hit by a ''fan'', which france took insult to and asked for apology's, which never came - and then came the french invasion.

Of course, don't get me wrong, thats just an excuse for blatant imperialism, but i still find funny that it is one of the reason given for that conflict.

I also stumbled on the pig war - apparently a war between British canada and America in 1959 after a pig was shot.

And:
The War of the Stray Dog (1925). On the tense border between Greece and Bulgarian Macedonia, a dog strayed away from the Greek soldier who had adopted it and crossed the border. The soldier chased after it and was shot by a Bulgarian guard. Infuriated, Greek soldiers stormed across the border. More than fifty soldiers were killed before the League of Nations intervened and stopped the hostilities.

Any others?