Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
Lucas John "Luke" Helder (born May 5, 1981) also known as the Midwest Pipe Bomber, is an American domestic terrorist and former University of Wisconsin–Stout student from Pine Island, Minnesota. In 2002, while attending the University of Wisconsin–Stout, Helder planned to plant pipe bombs in mailboxes across the United States to create a smiley face shape on the United States map. Less than a year after a University of Wisconsin-Stout student was charged with planting pipe bombs in mailboxes, a second UW-Stout student faces criminal charges related to the devices. The 19-year-old student was charged Monday with possessing explosives after being found with 11 pipe bombs in his dorm room.
Text fits
Save
Cancel