"Because when nasty things enter the forest they usually go after the unicorns first. This season is a delicate time for them!"

Peter laughs at Murdoc's new vocal tone and wonders if Murdoc is aware of how feminine it seems. "And it's just a simple Dissilusionment charm; I'll take it off when we're done! You'd make a fine woman, Murdoc."

Letting his eyes wander so purposefully is mostly teasing, but a little bit because Murdoc is attractive and the spell just twists what's there. Of course, Peter is capable of finding almost anyone attractive.