You can dress up like twins, I can teach you some French
They could dress up matching and Abel could teach them some french, since Abel is from Canada where french and english is the official languages, Abel has also sung in french before, the intro/outro on Montreal.
But he’s likely talking about french kissing, and maybe a threesome aka menage a trois, the french term for a threesome. Teach them french, possibly = Have a menage a trois.
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