What is Ibtr?
1.
In before the Rickshaw
If one were to post something irrelevant, idiotic, or uninteresting on a certain message board, someone may declare 'ibtr' which would, in turn, be grounds for that specific post to be moved to a section on that message board dubbed 'Retard Rickshaw'.
See
2.
i bet their retarded
wtf are they tking for, ibtr
3.
its better than rooted
wow this lan is ibtr