I have one of those dog watering systems that has a tray she can drink from and a gallon jug, placed upside down, on the back of the drinking tray inside the house. I went to clean and refill the thing and noticed to my horror that the jug (which has a little feed valve on the lid) was empty of water but had maybe 50 mosquitoes in it.

Aaaackkkk....a reinforced platoon of insurgents!
Not wanting to use insect spray, I took the jug outside to drown the varmints with a high power water spray. Turned the water on to pre-charge the hose and slowly unscrewed the lid. It was like kicking a hornet's nest! The few that escaped with their lives attacked me with a vengeance for murdering their brethren like they'd been taking lessons from the Taliban.
I emptied the jug of the drowned carcasses of the miscreants while swatting at the attackers and dashed into the house. A couple of the kamikazes tried to follow and I considered administering a little 10mm medicine from my sidearm, but settled for bloody swats.
I hate mosquitoes!!

Now I'm wondering how they got in there. My first thought is a wandering invader put the larvae in the tray and they floated into the jug. Then I thought, what if they are in the Houston city water supply?

Did I say it already? I HATE MOSQUITOS!