1) The act of killing yourself, it can involve pills, hangings, firearms or anything else that is potentially 'dangerous'
2) What you'll hear if you fire at your feet with a rocket launcher on halo.
3) A very annoying hip-hop song.
1) Billy hated life, so he took a shotgun and blew his brains out.
3) I'm su-i-cidal, su-i-cidal su-i-cidal for you.