I have this really strong urge to put a bunch of bismuth subnitrate in one vial, then put some mercury in another vial, then put the two in baggies, tie string around them, and swallow them both with the end of the string still in my mouth, then get on a plane, fly to LA and back, then, when I get off the plane, walk up to an air security official, puke the two vials up on his fancy shirt and tie, and say:

"If i had gone into the bathroom during my flight, taken the two of these from my stomach, and mixed them, i could have blown the entire plane up. Have a nice day, officer."