This could mean one of three things.
‘Stunned Tin’ (Self Explanatory)
‘Stuntin’ (In the ‘halting of’ sense, usually used in reference to growth)
‘Stuntin’ (In the daring, bold, absence of fear sense in which daredevils such as Evil Knievel performed daring stunts)
If the first, as stunned tin, Lil B is referencing the Tin Man from The Wizard of Oz. This character’s only desire was for a heart because he could only see himself as cold when throughout the adventures with Dorothy, he was her most sensitive companion. Lil B intends to inform the audience of his underlying sensitive side regardless of the tough front he may put up or sometimes be convinced that he has. As a rapper, weakness is looked down upon and so he remains the ‘Stunned Tinman’ in the sense that he’s helpless (stunned) to the views on which his exterior portray but that he, once truly known, could be one of your greatest companions.
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