"You have to use your butt as a fulcrum"

I stopped in at a cycle shop in Interlochen today looking for a motorcycle.  I was chatting with the shop folks about the type of bike I was after, and how I didn't want anything too big, nothing I couldn't pick up if it fell over.  At that, the 60-something, buxom matron of the shop said, "No!  You can pick up ANY bike!  You just have to use your butt as a fulcrum."

ful·crum

   [fool-kruhm, fuhl-] noun, plural -crums, -cra   verb

–noun

1.

the support, or point of rest, on which a lever turns in 
moving a body.

2.

any prop or support.

3.

Zoology . any of various structures in an animal serving as ahinge or support.

–verb (used with object)

4.

to fit with a fulcrum; put a fulcrum on.