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1.
slang term for diabetes. originates from liberty medical ad with Wilford Brimley (he of Our House and Quaker Oats fame), who pronounces diabetes like most old people, "diabeetus".
"i got all fat then i caught the beetus, yo."
by trevor bizznaps March 28, 2007
 
2.
A title given to the truly awesome, but usually mistaken for diabetes. Originally used by the great Wilford Brimley.
Wow! That guy truly is the Beetus!
by Morbid Duck June 13, 2010
 
3.
The act of taking a female home, punishing the box and kicking her out right afterwards.
"Yeah, she's aight... I'd give her the beetus..."
by SweetNizzutz October 16, 2009