noun
underwear peeking out of shorts
Slang abbreviation of はみ出しパンツ (hamidashi pantsu). Refers to the visible part of underwear above the waistband of shorts or pants, often considered a fashion statement or accidental exposure.
彼女のハミパンがちょっと見えてるよ。
Her underwear is peeking out a bit from her shorts.
最近、わざとハミパンを見せるのが流行ってるらしい。
Lately, it seems trendy to intentionally show your underwear above your shorts.