「百八といえば煩悩の数だ」「お兄ちゃんはどんな煩悩があるの？」「言ってもいいが、検閲削除になるぞ」

「」「？」「、」

'108 is the number of earthly desires.' 'Big brother, what kinds of desires do you have?' 'I could tell you, but it'd get censored.'

Literal

''108 [quotative-といえば] earthly-desires [possessive-の] number is.'' ''Big-brother [topic-は] what-kind-of earthly-desires [subject-が] exist [question-の]?'' ''Say-may-but, censor-deletion becomes [emphatic-ぞ].''

A Buddhist cultural reference. 108 煩悩 (ひゃくはちぼんのう) — the 108 earthly desires/defilements — is a core Buddhist concept, connected to the 108 bell strikes ringing in the New Year at temples. 煩悩 means 'bonnō', the worldly attachments Buddhism seeks to transcend. 検閲削除 ('censorship deletion') is a self-aware comic phrase for 'I can't say that in front of you'. ~といえば ('speaking of X') introduces a topic by keyword.