I heartily agree that some creationists go overboard when saying that disagreeing with them equates to "calling God a liar."  But, I think the rabbit-hole goes deeper than all of this on both sides, and in this recognition, the only way to deal with someone like 
@AV1611VET is to cull out the deeper, more personal biographical and developmental formations he's had in his thinking over the years of his life.
The catch here is that if we can't do this--and usually we can't very easily since people don't just want to be open books--then we might as well just be arguing with a wall.  We have to be able to do more than simply insist to some person that he (or she) is inconsistent in believing what he believes or in interpreting the biblical texts that he reads, and we have to be able to do more than just demonstrate some cursory level of inconsistency.  And if these interlocutors don't 'allow' us to go deeper into their reasoning and psychology, then we're stuck arguing with them on the cursory level.
And we make no progress.
This is why threads like this perpetuate themselves 
ad naseam.