Expressions (phrases, clauses, etc.), I-adjective (keiyoushi)
blunt; to the point; direct; outspoken; frank
Idiomatic expression
「・・・つまり、セックス!?」「うわあ、健二ったら・・・みもふたもない」"... in other words, sex!?" "Geez, you don't beat around the bush!"
Also written 実も蓋もない【みもふたもない】