Prehistoric Jokesters T-Shirts

"Why T-Rexes do not play volleyball..."

'Hurry, wipe it off before Dad comes home!'

The first car accident.

'Some of those youngsters have come up with a terrific new idea - feathers.'

Children disturbing a heart rate reading.

"Frankly, I can't wait until I evolve into a bird..."

Early photobombing

"Ooh look Derek. A shooting star. Quick make a wish"

"Don't tell me we're eating Paleo again."

'I've been a nervous rex all day.'

"See, Og If mammoth foot ticklish, could me do this"

"While you were working on fire, I was working on my satellite. Once we figure out how to launch it into the heavens, other inventions will follow, like phones, GPS, weather predictions. . ."

"Admit it, we're lost."

"Please! No harmonizing during ululations!"

'Let's throw ball. Running game not working.'

'You realize, of course, there's a seven-day waiting period.'

'You know what they say...live fast, die young and leave a great fossil.'

'AAAARGH!...Get it off! Whatever the hell it is...Get it off!'

"Can you stop complaining about historical inaccuracy and try to enjoy yourself for one minute?"

'I made your favorite for dinner — pterodactyl nuggets!'

Herding lava back to the fire pit.

"Take that mammoth back. It's not 'wooly' enough."

'I've only come to get my nail back.'

Early on-line shopping

'Look, Dad! -- I taught Shep to walk on his hind legs!'

"How the hell is that supposed to feed us?"

'Hunting and gathering doesn't sound very interesting, so I have decided to become a consultant.'

"See? Look what happened to Ook! - I WARNED you about evolution."

The invention of the wheel and the axel.

Mook's regret after inventing fire.

"Your therapy will be a combination of drugs and clowns."

'You can't believe a word he says since he invented the subjunctive.'

'The hard part will be writing the tutorial.'

Hedgehog holding sign saying 'the end is nigh' as man invents the wheel.