مزه دهنش چیه

Question

مثلا به کسی میگویید:

تو باهاش صحبت کن ببین مزه دهنش چیه.

Answer 1

Talk to her. See where she's coming from.

Have a chat with her. Sweet-talk her into saying clearly what her intentions/demands/expectations are.

Strike up a conversation with the lady casually bringing up the possibility of a deal. See what she hopes to get out of such an opportunity.