Green’s Dictionary of Slang

1. the knees.

1891

G.R. Sims ‘Tottie’ Dagonet Ditties 126: Down upon my ‘bread and cheese’ / Did I drop and murmur, ‘Please / Be my “storm and strife,” dear Tottie, / O, you darlingest of girls!’.

2. a sneeze.

1938		L. Ortzen Down Donkey Row 11: Bread and Cheese – Sneeze.
1960		J. Franklyn Dict. of Rhy. Sl. 43/1: bread and cheese Sneeze. 19 C.
1969		S.T. Kendall Up the Frog.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.