Mischievous Masterminds T-Shirts

"Assuming your parents check your browsing history, let's mess with them a little. . . H-A-R-V-A-R-D T-U-I-T-I-O-N."

"You're invited to our management excursion. Come dresses as a pinata."

Open mike night presents Sadie Cohen. Summer's almost over

"Do you think Trump has read 'Contemporary Relativism and the Death of Meaning'?"

"Before we decide if you can get in we have to watch a film review of your life..."

'Don't write on that wall with crayons! It'll show up better on that wall over there.'

Implement operation 'KILL ALL PLUMBERS'!

"I did what you asked and got rid of my white mice."

A thief steals a heart

"Okay, you play dead. 1-2-3 Go!"

Monkey Business

"So which one of you pesky dogs stole the last cookie from the bottom of the jar?"

'Done! We're now on Santa's 'nice' list.'

Eager to pull a prank on his chiropractor, Dennis taped a bag of potato chips to the small of his back.

"Hey Neil, I've got an idea - let's really freak everyone out and tell them you're quitting physics to become my new co-Pope."

"You've been a very bad man and we like that. So now, we're going to send you to London."

'Can't you just bat them between your paws like everyone else?'

For the third time that week somebody had super-glued the manager to his seat. It was great for team morale.

Gracie hatches a plan to trap Santa.

'Looks like a chipmonk.'

Buster got religion in the pound and now works with other bad dogs.

'How'd you get out of time-out??. . . Dude, if you do the crime, you do the time.'

I wonder what the kids are up to at the lake. Your mom will keep her eyes on them. She won't let them get into trouble. Nothing gets by her! ZZZZ. Psst. My silence isn't free!

'The curious incident of the dig in the night-gown.'

'To err is human. To really mess up, we've got to do some planning.'

"...and remember, son - every now and then, refuse to eat your dinner no matter how good it looks or how hungry you are. It drives the dumb humans crazy!"

"He really likes to play with the mice before he kills them"

'You just stood there and let them put a bell on you? -- What were you THINKING?'

"Thanks for bringing the party mix, but. . ."

"I told you streaking at Wimbledon was a terrible idea!"

'As a baby sitter, you shouldn't think of me as a bratty kid...think of me as a jobs creator!'

HisssssHerssss....

Leaving pet shop, boy says to puppy: 'You're my bitch now.'

'I see you have been mopping the floor while I was out. Are you doing this to be nice or disposing of evidence?' 'Why can't it be both?'

'I think you mean my alleged pranks in class.'