Did Matt McConaughey kiss Paris Hilton?

Matthew McConaughey has suddenly taken an extreme interest in his oral hygene. He's been spotted brushing his teeth while out on a stroll:

As if that wasn't bad enough, he was also caught brushing away while sitting in traffic:

Wow. Whatever it is that got in his mouth... Let's just hope he gets it out.

[source 1]
[source 2]