To keep each udder dry Courtesy of my significant other
It takes longer to milk the bull.
With cowculators!
Because April showers, bring May flowers!
Because the rain in Spain falls mostly in the plain.
Because the cow has the udder
Two, one to change the light-bulb, and one to observe how it symbolizes an incandescent beacon of subjectivity in a netherworld of cosmic nothingness. This is courtesy of Spencer Reid.(CM)
If she's only wearing one sock. (This joke brought to you courtesy the homeless guy outside my local 7-11.) Edit: tweaked the punchline.