Phrases with "key" in them

[kwayme]

I'm looking for common phrases with the word "key" in them.

[Quizmonster]

"21, key of the door" used to be a bingo call, referring to the fact that 21 was the age of majority in the past, rather than 18.

[Doolallygirl]

Key to my heart? ie you get the heart shaped pendants for necklaces with a little padlock thing?

[Doolallygirl]

I've got the key, I've got the secret!! Sorry, just a song from the 90's.... but it does contain "key"!

[FIirty41]

Monkey on my back. Hung like a donkey.

[BenDToy]

Key in eg an answer, key word, key the mic (on a 2 way radio), key figure, keynote speaker, key player.

[rjcb23]

"lets go throooouuuuggghhhh........the key hole....." ? (!)

[RUKiDdiNG?!?]

r u key-ding?