Playful Rivalry Lover T-Shirts

'They're Home!!!... HA-HA-HA... you are soooo busted!'

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!'

"Why don't you come get me? Oh that's right, you aren't allowed on the couch!"

You were warned about mixed marriages.

'Oh yeah, your dad might be on 4-1 in this afternoon's race, but mine is on 3-1!'

Tic-tac-toe

Danth battle?

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

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

The Cricketer and the Golfer

Next Wave Collegiate Sports

"Looks like somebody brought a blanky to a pillow fight."

"That's $20 for you if you pluck the tail feathers off my rival over there..."

"Just being proactive."

Fight on the top

'This won't take long, nurse. This is the dog that got my best friend last summer.'

"Yin and Yankee fan"

Paradise FC: The Blessed Y The Rest.

"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!"

Pole jumper about to land on a giant whoopi cushion.

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

'I hate snowboarders!'

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

Lion v Kiwi.

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

Strikeout Dog

Dog tallying his score against the mailman.

A Man mixing up his sports.

'Our competition is quite energetic.'

Later accounts would call it the Greatest Water Battle of All Time,

'Oh, yeah? Well, my dad can pretend to beat up your dad!'

David Anderson vs. Goliath