Nobody doesn't speak grammatically.

Nobody speaks without the use of grammar.

In other words -- even if you speak without grammar, grammar still affects the way people interpret what you say.

The conversation went, and I quote:

Person A: "I think ten days in the slammer would build some character."


Person B: "I like the way this guy thinks!"


Person C: "I'd like to see you try."

Based solely on context, because you didn't specifically mention who you were talking about, you could have been interpreted as having said you'd like to see Person B try to like the way 'this guy' (Person A) thinks. If you had said I'd like to see him try then you would have more clearly been referring to Person A.

Thus, my comment of "Wow. I'd ALSO like to see him try liking the way that guy thinks. It would be cool to see him actually do it!" serves to generate humor by taking what you said simply at face value rather than correcting the mistake.

But that's besides the point. The point is that not speaking grammatically is metaphysically impossible. Grammar is a constant law of linguistics and its rules completely determine how any given string of words will be interpreted by listeners.