"to enter the head": for learning to stay in one's head

head voice

a yakuza member beneath the oyabun and responsible for seeing that his orders are carried out correctly.

scratching the head / ornamental hairpin

to scratch the head

(Internet slang) moar

goody two shoes

(Buddhism) think on the power of Kannon

A class representative, in the context of an elementary school or junior high school.

a pitch accent pattern in Japanese where the first mora is high, followed by an immediate downstep: the first syllable has high pitch and all subsequent syllables have low pitch