Once a conversation has come to an awkward silence, a person can make light of it by saying "boop boop bee doop" in a small tune. The conversation will start again, and further awkwardness is avoided.
Joe: Wana go to the movies tonight?
Jen: No, I'm going with my boyfriend
Jen: ...boop boop bee doop.
Joe: Okay then, wana go play checkers?