CSI: NY, Season 4

Sid:
(scratching at his arms and shoulders during the post) All right, then, ladies, unless there's something else?

Stella:
There is one more thing, Sid. Mucuna pruriens. In India, they're also known as velvet-bean, cow-itch, but here in the United States, we usually call it itching powder. (hands him the evidence bag with a packet as Lindsay starts laughing)

Sid:
Oh, no, oh, no...

Stella:
It looks like he stuck it in his pocket, and after the blast, it wound up dispersed on his clothes.

Sid:
(looking between the two women) Why aren't you...

Stella:
A long-sleeved lab coat. Both stylish and functional.

Sid:
Exploding cigars, insect ice-cubes, itching powder... what kind of a clown are we after?