Summary: a different type of monster is in the bath tub.
Pairings: Merthur and Gwen/Arthur fully implied.
Of all the jobs Merlin had to do for Arthur he was pretty sure drawing him a bath was one of the worst. It was a once a week job but it involved carrying a heavy tub and then hundreds of heavy buckets of water to fill said tub. While it was a relieve he didn't have to do it every day that didn't mean he could prepare himself Arthur never has a regular bath day and will always surprise Merlin when he wants one and sometimes he wants two or three baths a week when something special was happening.
Merlin had only just lugged the first two buckets up when he found Arthur rather naked in the chambers looking at him disapprovingly.
"You could at least wait until after I made the bath before you took your clothes off," Merlin muttered.
"I wouldn't have too if you made my bath in time," Arthur retorted.
"Well put some clothes on we don't want Gwen having a nasty surprise if she was to walk in right this second."
"What is that supposed to mean?"
Merlin merely smirked and allowed Arthur to jump to his own conclusions while we moved to pour the water in the bath tub. He froze when he saw something crawling around on the bottom of the tub...it was big...it was hairy...it was terrifying.
He let out a high pitched scream before dropping the buckets.
"Merlin! You clumsy clot, you do realise who have to clean that up, don't you?" Arthur snapped. His hard expression softens when he realised how pale and terrified Merlin looked. "What is it?"
"A...a...a...a...a...a," Merlin stuttered.
"Spit it out!"
"There's a gigantic mutant ball of your hair in there!" Merlin screeched. "What is wrong with you?"
"Me? It's your job to clean my bath tub!" Arthur shouted.
"Why me?" Merlin wailed.
"Because you're my servant!"
"Well it's your stupid hair!" Merlin looked back at the mutant hair ball and shuddered. "I think it just moved."
"Don't be ridiculous Merlin," Arthur snorted.
"I'm not the one being ridiculous you're the one being unnaturally unconcerned with the fact you're losing your hair to a giant ball."
The next thing Merlin knew he was looking at the stone floor as he struggled to fight a very naked Arthur off of him. The wrestling continued for a good few minutes and would have kept going on until one of them gave in or died of exhaustion.
However the door slammed opened and Gwen stormed in she picked up a bucket, held it high up in the air, before bringing it down hard on Merlin's head.
"Hands off of my boyfriend, bitch," she hissed as Merlin collapsed on the floor.
Arthur merely just stared at her in horror.
The mutant giant hairball trembled in fear.