Ugh, "at 11 PM on a Sunday" is the WORST time for that. Grab a bucket and turn off the water supply under the sink right now. You can get a temporary rubber coupling from any 24 hour store to patch it until morning.

Reminds me of how people treat their fancy kitchen gadgets. You buy the high end blender for special occasions but still make your daily smoothie with the cheap one. We all have that one tool we save for the "real" work.