Idiom Request: you know how to convince me

Do you know any idioms meaning "you know how to convince me"?

Edit: the context is a humorous response to someone offers you something you can't resist

Solution 1:

Common in UK is: "OK, you twisted my arm"

It's said sarcastically, as no arm-twisting was really required.

Solution 2:

The idiom silver-tongued generally refers to someone perceived to have great powers of persuasion.

sil·ver-tongued (sĭl′vər-tŭngd′)

adj.

Having or exhibiting the power of fluent and persuasive speech; eloquent.

It is often used - most often in the second person- in the highly idiomatic and humourously applied phrase silver-tongued devil, e.g. "You've talked me into it, you silver-tonged devil, you!"