Really fun. The algorithm generates new nouns based on my drawing on the fly and add to the original pool. It stops and say 'Oh I know, it is ___', when there exist a guess that is the same as the answer. Might seem like it is really clever, or, it could have like 1000 guesses for every stroke and one of it is the correct answer.

My bathtub looks too ridiculous for it to be able to guess it with confidence.