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28,000 BC. Dr. Og discovers you can't get blood from a stone.

"If you're tired of stegosaur, go kill something else."

Jurassic Parking Lot

As the world emerges from the last ice age Ug & Og discuss a historic agreement to reduce CO2 emissions from woolly mammoth barbecues.

This side is the gag reel.

"My dad can't talk yet, but he's learned to wave bye-bye."

"I've considered portraiture, but everyone is so ugly."

"Don't bother gathering carbs for me, I'm on the Paleo diet."

"Is it free-range?"

'I just evolved the opposable thumb, and I've already got carpal-tunnel syndrome!'

'Gentlemen, invent your engines.'

"Google Earth must have a defective camera. There's a big red spot above our location."

'This cd is Earth and Wind. There is no fire, yet.'

"I gotta flat. Can you get the spear out of the trunk."

"Hey Arthur, check it out, a shooting star. That's a sure sign of luck, my friend."

'Do you mind if I share your post on my wall?'

'They're called 'numbers' -- Now we can have public opinion polls!'

"This is what I use for social media."

'Of course it's not signed. Writing hasn't been invented yet.'

Geekasaurus.

'I just invented business!'

"Gorg, you've got to let yourself evolve!"

'It's called a 'hat' -- you tip it to women instead of hitting them over the head with a club.'

"I bought a fake rock to cover up this ugly rock."

"I promise you. One day granite kitchens will be the in thing."

"I told you not to leave without taking out the garbage!"

"All I need now is a trainer!"

"Crap. I overslept."

"Has he had all his shots"

'This type of injury wasn't so common, before the invention of the wheel. '

'Sorry, Gowp, but I'm rteplacing you as Head of Advertising.'

Early detection was rarely helpful.

'That's a bad omen no sooner does he invent the wheel than he has the first ever road traffic accident.'

"It's my latest invention - I call it 'Fire point two oh'!"

'Oh, come on -- everything can't be extinct!'