“Jimmy Kimmel Live!” brought back a fifth installment of the late-night host’s popular “Lie Detective” segment, in which he grills kids with a lie detector test.

This time, the pint-sized victim is seven-year-old Marcus, who really, really loves basketball, admits it’s “more fun not to do homework” … and has a big secret.

“Lie Detective” Jimmy and the “Truth Fairy Guillermo get to the bottom of it. Watch the Clip Above.

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