Top Definition
a buffoon or imbecile; plural - bombii
He thought that he could jump off of the roof with an umbrella and float like Mary Poppins. What a bombus!

We cannot let those bombii procreate because their retarded spawn will eat all the nickels and I won’t be able to get the proper change for a cup of coffee.
by Muff Crusher and Tabinator August 28, 2008
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