Merlin’s Beard - God that’s weird!
Horcrux Snape - For f***’s sake!
That’s Weasley - That was easy!
Hermione Granger - Hello stranger!
Quiddich Quaffle - What a load of waffle!
...Now let’s see them used in situ:
I came out of the house only to see my dog grunting at a squirrel. “Merlin’s Beard!” I exclaimed. Then I noticed that my dog was standing on my favourite flower bed! ‘Horcrux Snape’ I thought to myself, ‘I only just planted those a year ago!’. I yelled at Dozer - my dog - to move his arse kindly off my flowers which he did, promptly. ‘Hmm...That was Weasley’ I thought to myself! Usually it takes longer for Dozer to recognize my mood and oblige my orders! Just then I saw and old friend of mine - Julianne - walking passed the house. “Hermione Granger!” I called out to her but she simply looked at me, puzzled, and said “Quiddich Quaffle!” and thus ended our conversation.