котелок варит(He has his head screwed on right – У него котелок варит. Могут также использоваться варианты с наречиями "the right way" и "straight" VLZ_58)
вот и разберись(Jennifer told me she had gone to Crofton Manor in the 1990s. I asked Fiona about that and she denies having seen her there at the time. Try that one on for size! – Вот и понимай как знаешь. / Вот и разберись. ART Vancouver)