I smell
You know someone is lying and you're not going to let them get away with it. It's like when you catch a whiff of a strong wet fart and you know exactly what's going on.
I said 'when you can tell a nigga cappin' when my friend said he didn't eat my sandwich.
I said 'when you can tell a nigga cappin' when my brother said he didn't steal my game.
I said 'when you can tell a nigga cappin' when my mom said she didn't eat the last slice of cake.