You can bullshit a bullshitter, except if they also have high cognitive ability, according to Littrell et al. (2021).
Littrell, S., Risko, E. F., & Fugelsang, J. A. (2021). ‘You can’t bullshit a bullshitter’ (or can you?): Bullshitting frequency predicts receptivity to various types of misleading information. British Journal of Social Psychology, 60(4), 1484–1505.