Calling God "his hottest Pappa" is clearly wrong and I do not want to make light of that fact. However, I think is is certainly possible (I don't know him) that he thinks that he is honouring God with that term.
I do know that I have said a lot of things in my Christian life out of ignorance, then later I needed to repent of, when God gave me more knowledge on the issue.
Of course that didn't excuse me, it was still wrong but I did it out of ignorance.
One of the things about this issue and others like it that is sad, is the fact that in a lot of cases when someone becomes a Christian, they are actually encouraged to use their gifts in ways that may or may not be Biblical.
In my case, I had to learn the hard way that what I thought was God honouring was in fact was not Biblical. This of course was God's own doing as He began to grow me.
I think it is great to reveal sin in people's lives and let God convict of that sin. Yet, I try to be careful not to go further than that.
For example, if I am with a Christian teenager who I know has is growing in Christ. Yet, I I find out they listen to rap music, should I conclude that they are still dead in trespasses and sins? I don't think so, if I did it would be speculation on my part.
I think the better approach is to give them Scripture and or articles that point them towards the truth. Even if they didn't immediately repent, I wouldn't conclude that they are unregenerate either. Why? Mainly because looking back, on many issues it took me years to come not only understand an issue, but to repent of a sin.
I also have come to believe that even this time next year (if God hasn't taken me home) I will have repented of other sins that at this time I think are Biblical.