It basically means to spoil carefully laid plans, For example;
"Don't upset the apple cart by revealing where we're going."
Answer:
I know I’m not the perfect lover
And I can tell you love her
I can tell you love her, love her
She feels like summer
Gets along with your mother
So go ahead and love her
Go ahead and love her, love her, lover
I'm not the perfect lover
I'm not the perfect lover
;) good vibes
Answer:
Five segments equal to the size of the eye would go across a person's head. One on each side of the actual eye and one in the middle. The eyes go about halfway down the head.
Example (not my drawing btw):
I believe the answer is "Acoustics"
Hope this helps!