Prehistoric Jokester T-Shirts

'Wait! -- We'll never develop a meaningful relationship if you keep knocking me unconscious!'

'I got sick of playing 'Rock, Rock, Rock,' so I invented paper and scissors.'

'It's a cover for the latrine, but yeah, it could be used for transportation...'

'Uncle Oog isn't very smart, but he's a lot of fun to play horsie with.'

Hungry man chasing elephant with knife and fork

'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.'

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

Early photobombing

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

"Please! No harmonizing during ululations!"

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

"Admit it, we're lost."

"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. . ."

'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.'

"Jack Daniels-in-a-box"

Wolfgang Amadeus Mozak.

'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?"

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

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

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

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

Early on-line shopping

Herding lava back to the fire pit.

'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.

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

'The hard part will be writing the tutorial.'