"Life is constantly fleeting from your grasp even from the very day it's bestowed upon you, but the shadow of death is always there, waiting for its chance to take you away."
"Even though many may not think so, ignorance and innocence are one and the same. The only difference is that one sounds nicer."
"I once knew a man who spent his entire life contemplating where we go after our death....it's a shame he realized it a second too late to tell anyone."
Jamming it down their throats is the simple way, assuming it's a larger one. Or if you'd rather be slightly more discrete, get a brand that's toxic when ingested, melt it down, mix it into a drink and give it to someone. For an extra precaution to make sure poisoning is successful, add a minor dose of cyanide.