Jovial Joker In Lab Coat Mugs

"Of course you can't put your finger on it. It's a hypothetical particle."

'I can't force jocose if I'm not feeling it.'

"It that it? I don't have my contacts in."

'If someone farts in the forest and there's no one around to smell it, does it make a stink?'

'If we were in the Renaissance, we'd be painting nativity scenes right now.'

"Have you tried turning it on and off again..?"

Complaints Desk

Death Photobombs a Holiday

Plasma Ball

'I taught him to shake hands, but I don't know where he got the joybuzzer!'

"Although your discovery is very important, the consensus is that your article about it lacked suspense, and was completely devoid of humor."

'I'm not as think as you drunk I am.'

Tee-Hee-Bay - XXXL shoes.

Nyargh! - 'I swear I will never eat fibre again...' - 'I christen thee 'Titan'.'

"Look - the FIRST EVER picture of a black hole!! What do you think?"

"I take it you'l like to open joint accounts. . ."

"Looks like we left out the wrong brownies."

'I feel much better. I think the cheese treatments must be working.'

Practical Jokes in the Science Lab. Watch this -- That chair is made of anti-matter.

"...then - and here's the funny part - I add the potassium sulfate..."

'Don't worry, fifty something is the new thirty something.'

'But that wasn't a beaker of acid! That was a cup of coffee from the cafeteria!'

'If that's true, if you've really done it, I can say unequivocally, that is indeed...Nothing to sneeze at!'

'Just as I thought...made in Alaska!'

'I failed science.'

Brendan suddenly realizes it was a mistake posting 'Susan, will you marry me?' to the stadium's jumble tron.

"Let's see if we can't scatter the trash all over his desktop."

"You know, your poker face is useless if you keep wagging your tail."

'Every year was the same. There was always some clown or comedian in Brian's intake of pupils.'

"Oh my....Look how much you've grown."

The G-nome Project (Mapping the genome).

'Apparently he does 20 yards to the pint.'

'If I'm an agnostic, what's an atheist?' 'Never mind that. If I'm an atheist, what's an agnostic?'

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"I've got a dog licence. Will that do?"