Chuck off
Definition 1 of 1
Pro Tip 1/3Informal Use
Used in casual settings among friends or in relaxed conversations, not in formal situations. 
Done with those notes? Just chuck them off.
Pro Tip 2/3Metaphoric Sense
Can mean to get rid of non-physical things, such as ideas or feelings. 
I need to chuck off these negative thoughts.
Pro Tip 3/3Not Literally
Doesn't always mean to throw something with force, but rather to casually dispose of it. 
I'm going to chuck off these old receipts.