I think the most hilarious thing with these Dota's is putting them in a random trade with a friend.
Me: Oh you want this TF2 item from me?
Friend: Yeah, I can give you something back if you want me to
Me: Nah, it's good. I have a little extra for you tho
Friend: Ooh, what could tha- ...
Me: *Starts snickering*
Friend: ಠ_ಠ
-Trade succeeded-
Me: DOTAAAAAAAAAAAAAAAA
Friend: God damn it.