look up any word, like the eiffel tower:
 
1.
When you don't honestly believe something to be the case, but wouldn't be surprised if it turned out to be true.
My friend was so crazy, I half expected him to actually jump off the water tower into a tub of jello when the radio station offered him $10.
by David Fier May 09, 2007
 
2.
To anticipate the occurrence of an unlikely event while feigning surprise by its ultimate lack of fruition.
I half expected Billy Mays to show up in my kitchen and start telling me I was doing it wrong.
by Glitch1182 January 19, 2010