Verb used to describe the act of "throwing someone under the bus" or otherwise admitting someone's wrongdoing for them.
My sister was in trouble with my mom, so she underbussed me for something I did last week, and got herself off the hook.
An underbusser is a grown tattletale.
An underbusser is a grown tattletale.
by misshappenstanc October 9, 2017
When you have just taken to many drugs over the weekend, its sunday night work starts tomorrow and you are paronoid and depressed the underbus picks you up.
by Mark Lyons November 18, 2006
The act of disowning a close political ally, advisor, or family member who says or does something endangering a candidates election chances
Wow, it sure didn't take Obama long to underbus Wright!
Yeah! Even faster than he underbussed his Grandma. . .
Yeah! Even faster than he underbussed his Grandma. . .
by Wind Rider September 30, 2008
A new way of saying Tube/underground when relating to trains. because an underground train is just an underground bus, or an *underbus*
by Sophierules March 22, 2007