Someone who does not look like a smart person, but he or she is actually knows about everything a lot of knowledge in his/her mind. Only disclosing it to certain people. Usually the silent person in a group discussion.
A Maanaka is someone who eats over sized dicks and drinks green cum through a bendy straw.
It can also be used as a verb. To maanaka someone is shove a bendy straw through their penis and slurps down green cum.
Hey, DU you think it would be possiblefor me to maanaka you?