What is Isbi?
1.
Stands for "I should've been invited". An acronym used to describe excessive erratic behavioral shifts when the offending party is not privy to being invited somewhere due to her ever-sad countenance, overall gloom and perpetual air of malaise.
Scott: "Paul's at the mall, I just had to come back and get something."
Scalene <super off the wall excessively offended with a red face and teary eyes>: "At the mall? I should've been invited."
Scott: "I don't have time for this now." <muttering in orcish; "fcuking ISBI">
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1.
a disease held by a kid who has orange hair, pale skin and freckles on his face. Don't confuse them with kids with orange hair but ..