Food-grade WMD
Fun fact for the night: You know your homemade mustard is hot when it fogs up your contact lenses.
I went with Alton Brown's procedure for attaining peak hotness, but lacking mustard powder, I milled my own from seeds which probably contributed to boosting its spicy characteristics.
Along the way I may have violated the Geneva Protocol of 1925 for use of gas weapons. Having survived the ordeal, I don't hold it against me and therefor won't turn myself in for accidental attempted suicide. I think I was bribed, but any proof was ingested before it could be collected as evidence.