It's the little things that make life go 'round

So on Monday in inorganic lab we were running vacuum filtration on a ferrocene sample we synthesized. Unbeknownst to us, somebody put a whole bunch of soap in the aspirator's water tank, so about a minute after we turned on the aspirator pump, the whole thing started foaming over all over the table. We laughed for a solid minute. I think that was the last thing any of us expected to see.