Definitions by D'Brackus JJ Jabber Johnson I

space-filler joke 

A (generally poor) joke made to a peron for the express purpose of talking to them.

Tom- "Hey Jenny, why'd the chicken cross the road? He needed change for a twenty!"
Jenny- "That doesn't even ma--"
Tom- "So what are you doing later?"
Jenny- "Was that a space-filler joke?"

space-filler joke by D'Brackus JJ Jabber Johnson I October 3, 2015