Here are a few I came up with off the top of my head.
- I'm a wizard, of course I can become pregnant (male pregnancy)
- The potion/spell made me do it! (sex due to misuse of magic)
- You're my mate, shag me! (Veela!Draco or any other magical creature pairing)
- Coffins in the dungeon (Vampire!Snape)
- We're stuck in here until the storm passes/we're rescued, let's shag. (as many characters as you like stuck somewhere, bored and horny)
So tell me your favourite well used plot elements and why you enjoy them (extra points if you give links to fics that use them well) :). Please, no fics that make you want to claw your eyes out ::g::.
Oh and are there any comms that deal only with HP fic clichés? Either single ones like hp_mpreg or clichés in general?