Uhh..it was the other guy that said something stupid.
And you laughed at it.
And there isn't a thanks button, seriously.
There is one in the Crossfire section in my other tab, but not this one, I'll screenshot it for you if you really want me to.
And yes, it's a big blue button next to 'Quick reply' with a thumbs up sign saying 'Thanks', I'm not stupid, it's just not visible.