Words and phrases I've already used in conversation:

smashing
a bit
quite
cheers
brilliant
pint
quid

Words and phrases I've considered using and then reconsidered:
shattered
mental
manic
bloody
query
spot on
football (it just feels a bit wrong)

And I've not yet concluded a conversation with a falsetto sing-songy "bye", "cheers", "bye for now" or "cheerio". Be proud.