(offensive, Internet slang) a man whose age is greater than about thirty or forty who lives in one's child room and with one's parent(s).

single room

double room

the darkest place is under the candlestick; can't see the wood for the trees; people often known little of what happens under their noses; lit. "dark under a candlestick"

tōrō nagashi (the custom of floating paper lanterns down a river especially at the end of the Bon Festival)

headlight, front vehicle light

blister (on the skin) / bloat / bubble (e.g. financial)

blister

will you marry me

to feign ignorance, to play dumb, to pretend to not know or understand something