Touch-me-not usually means jewelweed around here. I can see how a mimosa could acquire such a trade name, that is what he is decribing.
carnivorous newbie - I've grown mimosa pudica, it is easy to germinate (may be very quick if soaked overnight in hot water, but it is not required) and will grow well on a sunny windowsill. It doesn't need nearly as much water or humidity as cps and tap water works fine. The plant grows reasonably fast, especially compared to cps. It gorws well in a mix of peat and sand.
I don't know how it would do in a terrarium, I've only tried it on windowsills.