I never understood why people always refer to it as the bernoulli principle around here. I've never heard anyone in a classroom environment refer to how an aspirator works as this, but instead they refer to the thermodynamics of a nozzle to explain how it works. I think I wrote something back in the day about all the equations that were involved, but I don't feel like digging for the search engine for it right now.
If at first you don't succeed, try, try again. Then give up. There's no use being a fool about it.