Where does “もっこりビキニ” come from?

もっこりビキニ (Japanese) comes from Japanese ビキニ, from English Bikini, from French Bikini, from German Bikini, from Marshallese Pikinni, from Marshallese pik, from Marshallese pikpik.

もっこりビキニ (Japanese): a tight-fitting men's swimsuit, a Speedo, budgie smugglers

Definitions

  1. a tight-fitting men's swimsuit, a Speedo, budgie smugglers

Ancestry of “もっこりビキニ”, step by step

もっこりビキニ traces back through two separate lines of ancestry.

via Japanese ビキニ

StepLanguageWordMeaning
1Japaneseビキニa bikini
2EnglishBikiniBikini atoll
3FrenchBikiniBikini atoll
4GermanBikiniA bikini, scanty two-piece bathing suit, named...
5MarshallesePikinni
6Marshallesepika plane surface; a layer; a stratum
7Marshallesepikpik

via Japanese もっこり

StepLanguageWordMeaning
1Japaneseもっこりbulgingly, standing out from the surroundings, erectly
Every word from Marshallese pikpikEvery word from Marshallese pikEvery word from Marshallese Pikinni