well, dumb ass, I figured the "^" made it obvious, but if I have to explain...
^= arrow pointing up
tony's post = one above mine, therefore, to indicate his post, I would need an indicator pointing up (since above is up, not down).

Therefore, we draw the conclusion (And by "we" I mean anybody with at least 1/3 of a chimpanzee's brain) that I am indicating that I found Tony's post pretty damn funny.

Any more questions, feel free to ask.