A/N: I don't own the Avengers or any of the characters. Please read and review.
Tony gasped. "What do you mean 'No one's ever pranked Tasha'?"
Clint sighed. "Nobody pranks Tasha because it's impossible. You just can't prank her."
"I doubt that. Everyone can be pranked."
"Not Tasha. Trust me, I've tried."
"Well, I haven't tried and I am the master prankster."
Clint shook his head and walked away. "It's your funeral."
Day 1
Tony got up early that morning and snuck into the floor that the Black Widow was staying on. He made sure to be extra quiet. Sneaking into the bathroom of a sleeping Russian assassin was probably not his greatest idea, but he had to prove that Natasha could indeed be pranked.
Once safely inside the bathroom, Tony breathed a sigh of relief. He quickly removed the showerhead and pulled the dye tablet out of his pocket. He placed the blue circle behind the showerhead and replaced it. She wouldn't see it coming.
At breakfast, Tony could barely contain his excitement. Clint gave him an amused look. "You're not going to get her."
Tony grinned. "Oh, I think I will."
Once everyone was at the table except Natasha, Tony's foot was tapping against the ground impatiently. She came out a moment later, dressed in a bathrobe and looked completely normal. No, trace of blue on her. She sighed. "Alright, which one of you used the last of my strawberry shampoo?"
Thor stopped talking and fidgeted in his seat. Natasha gave him a small smile. "Was it you, Thor?"
Thor gave her a sheepish expression. "Well, I ran out of my own and I remembered that you had bought a soap for the hair at the store."
Natasha chuckled softly. "It's fine, just ask next time."
Thor nodded gratefully and Natasha left the room. Tony's jaw hit the ground. She hadn't even looked at him funny. Clint chuckled. "You're not going to get her."
Tony clenched his jaw. "I will if it's the last thing I do."
That night in the shower, Tony plotted how to prank the spy. She was obviously fond of her hair care products. That would be the way to get to her. Tony stepped out of the shower and wiped the fog from the mirror. He looked up and let loose an unearthly scream. He was blue!
A note written in a fancy cursive was taped to his aftershave. "Nice try."
