yo-mamma.coffee

shuffle = (a) ->
	# From the end of the list to the beginning, pick element `i`.
	for i in [a.length-1..1]
		# Choose random element `j` to the front of `i` to swap with.
		j = Math.floor Math.random() * (i + 1)
		# Swap `j` with `i`, using destructured assignment
		[a[i], a[j]] = [a[j], a[i]]
	# Return the shuffled array.
	a[0]

module.exports = (robot) ->
  robot.respond /yo mamma/i, (msg) ->
    insults = [
    	"Yo mamma so fat I took a picture of her last Christmas and its still printing...",
    	"Yo mama is so fat, she got arrested at the airport for ten pounds of crack",
    	"Yo mama so fat she wore a yellow raincoat and people yelled 'Taxi'!",
    	"Yo mama so fat she's got more Chins than a Hong Kong phone book.",
    	"Yo mama so fat she put on her lipstick with a paint-roller.",
    	"Yo mama so fat Mount Everest tried to climb her.",
    	"Yo mamma so fat not even Dora can explore her"
    ]
    msg.send shuffle(insults)