motorcycle decorated with anime characters
Slang term from otaku culture, combining 痛 (ita, 'painful/cringey') with 単車 (tansha, 'motorcycle'). Refers to a motorcycle covered in anime, manga, or game character decals.
His itansha has a large illustration of his favorite anime character on it.
At the itansha event, colorful motorcycles were lined up.
A portmanteau of 痛 (ita, 'painful' or 'cringey', from otaku slang for embarrassing fandom displays) and 単車 (tansha, 'motorcycle'). The exact origin is uncertain, but it follows the pattern of 痛車 (itasha, decorated car).