2 definitions by Mysterious_twinkie

1. It is a nickname used by the servants for their young masters.

2. Son of someone else.
Ciel- I order you to bring me a dessert.
Sebastian - as you wish, bocchan.
by Mysterious_twinkie April 16, 2015
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1. (usually used as an adjective or a verb) When either a boy or a girl fans so hard about something that they get a "fan erection" and therefore, is fanmaning.

2. When a straight boy/man fans over a boy who is usually famous, or a fictional character.
1. That girl has been fangirling about the anime Black Butler for the past hour. What a fanman.

2. That boy keeps fanmaning about Justin Bieber's new hit song.
by Mysterious_twinkie April 7, 2015
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