Merlin and Arthur sat in the back of their biology class whispering amongst themselves while the rest of the class watched a woman give birth.
"Why can't we go to mine tonight?" Arthur whispered furiously.
"Because your father will be there and I don't like him!" Merlin retorted.
"How dare-"
"Arthur! Merlin! Stop talking and pay attention!" barked the teacher.
The boys smirked at one another but nevertheless they turned their attention to the birthing video. The camera focused on the woman's agonised face, and soon Arthur was giggling.
"What?" Merlin demanded.
"That's the face you made when you cum..."