39-year-old Robert Lyons of suburban Chicago was sentenced to 40
years in prison today for killing his mother. He killed her
because of a disagreement about Avril Lavigne tickets.  Back in
2008, things got complicated between Lyons and his 61-year-old
mother, Linda Bolek, because she wouldn't call a friend to get
skybox tickets to an Avril Lavigne show for him. Lyons responded
by stabbing his mother in the back nine times with two different
knives, breaking the blade off one and bending the other.  It
got worse. Lyons doused his mother's body with chemicals such as
Tile-X, Drain-O and Raid before fleeing the scene to go
shopping. Police found him several hours later, chilling at a
Hooters.  Lyons has dealt with serious psychological and anger
issues since his teenage days. Probably, this is an
understatement.  Avril Lavigne has not commented.  [via The
Chicago Sun Times]  Follow @ComplexGuide.