riding double; two people on one bike/motorcycle
Slang term for two people riding on a single bicycle or motorcycle, often illegally. Common in youth and biker subculture.
Riding double is dangerous, so don't do it.
sharing a seat; sitting two to a chair
Extended slang use for two people sharing one seat or chair, often in casual or cramped settings.
That couple often rides double, huh.
There weren't enough chairs, so we sat two to a seat.
Mixed hiragana-katakana spelling; also used in casual writing.
Kanji-katakana mixed form; rarely used.
Numeral-katakana mixed form; rarely used.
Ateji-like kanji spelling; it is rarely used.
Abbreviation of 二 (ni, 'two') + ケツ (ketsu, slang for 'buttocks'), literally 'two butts', referring to two people sharing a seat or vehicle.