(a) karnın(d)a, midesin(d)e.
With a few scotches under his belt, he's everyone's friend: Birkaç kadeh viskiyi midesine indirince herkesle ahbap kesilir. (b) görmüş geçirmiş.
He already had a few hand-to-hand fights under his belt when he was sent to front: Cepheye gönderilmeden önce birkaç süngü harbi görmüş geçirmişti.