break your mouth 

So good it broke your mouth. Spanish expression from Uruguay.

Malcom's burger is so good it will break your mouth.

break your mouth by Black House December 4, 2017

Step on a crack, break your mother's back 

This is an old children's game, anyone who trod on the cracks between the paving stones was out, until only one player was left, he or she was then declared the winner.

Step on a crack, break your mother's back– Most of us know the old rhyme “Step on a crack, break your mother’s back.” Whether the rhyme is the cause of, or a result of, this superstition is uncertain, though belief in it persists in many people today, even if subconsciously. Come to think of it, avoiding sidewalk cracks is probably a good policy for anyone who wants to avoid tripping.

Step on a crack, break your mother's back by WormBrian October 25, 2009