My bullshit meter is off the charts when he tells me those excuses.
Моё чувство распознавания ерунды зашкаливает, когда он говорит мне эти оправдания.
Definitions
This phrase means that someone is detecting a very high level of dishonesty, exaggeration, or nonsense in what another person is saying or doing. The 'bullshit meter' is a metaphorical tool for sensing lies or insincerity, and if it is 'off the charts,' it indicates an extreme or obvious case.