From time to time, I'll hand-roll American Spirit Organic Blend tobacco - particularly, on long road trips. They flipped out at the border when they discovered my ashtray filled with a half-dozen "roaches".
I got a real funny look from the U.S. Border agent when, stopped at the border entering Alaska from B.C. above Haines, I started rolling one in my car while he was questioning me. He didn't see the tobacco pouch and stopped in mid-sentence when he noticed me twisting one up:
"...uh...sir, that's not what it looks like, is it?"
I love questions like that, as it could have been some sweet bud, I could have assumed he thought it looked like tobacco, and I could have honestly answered, "No."