1. To assume something, and present it as fact.
2. To take an asinine comment, presumption or drunken declaration and automatically present it as fact.
Based on the legitimacy and presentation of Ted Wells Deflategate Report
Ex. Someone says that Lincoln may have been a Jedi ---becomes---Lincoln was a Jedi.
In converstion: "I'm gonna go ahead and Wells It and say Lincoln Was a Jedi."