Rivalry Revelers T-Shirts

'I hate snowboarders!'

'We had no choice, ump. Their pitcher threw a brushback, and so we retaliated with a burshback...'

"Fetch!"

If you've stopped acting like a tech geek, you can no longer be my arch-nemesis. Unless

...and the mighty sport of Kung Football was born.

Scottish Football Fan - "...and please Lord, let the result be against the run of play."

I only root so hard for my time because I hate your team so much.

'Dogs are so silly: Just throw a ball or a stick and they'll chase it and bring it back!'

'Can our software do that?'

'Shoot, this is nothing, you should have seen how good we had it back in ancient Egypt.'

'Just a word of advice ... He's a Saints' fan.'

'Big sale at the Dog Store. Buy 1, get 2 free.'

“Sweet mother of Marmaduke... no!”

Your enemy is defeated by Fate

Freudian Bar & Grill...Jungian Pub: 'We can out drink those Freudians ant day of the week!...'And twice on Sunday!' ...'Yeah!' ... e

'I can hold a match to his notebook.'

Tic-tac-toe

"Just being proactive."

Next Wave Collegiate Sports

"...And don't give me that 'I hope his precious little Blackhawks lose' look either!"

'I told you, if the LA branch steals our thunder, there is no more dialogue.'

"I guess there ain't room in this town for two bonsai specialists."

"You say that I love the Liverpool football team more than I love you?...."

'I warned him about watching the game at the opposition's pub.'

Harbaugh bragging rights 2043...

"That Melinda Alvarez thinks she's so smart! Well, I've been studying, and I'm gonna teach her a lesson on the test we have today!"

Fight on the top

'For heaven's sake Armitage - can't you just accept 2nd place in the best leek category?'

"Sorry, Man! I had no idea Alexa would be here!"

Fighting Gondoliers.

The Andrews brothers had an ongoing competition of seeing who could donate a pint of blood the fastest.

Federal Employees Annual Easter Egg Hunt: 'This isn't fair - the CIA always wins!'

'The rivalry at the pony club is getting out of hand.'

Cat taunts dog at intersection.

"I still hate you."