This is a new one... I was on a ~130nm cross country tonight, night VFR on flight following. Very quiet night... not a peep on the radio after "radar contact" was established. My wife and I were having good conversation and the time flew by pretty quick. I suddenly noted that I was getting very close to my destination and I really ought to have been moved to a new frequency, then passed on to a different center by then(I fly this route frequently so I know about where it happens). Fearing I missed a call or had a radio issue I keyed my mic... "Center, bugsmasher 12345...." pause..... (discombobulated sounding) "UHh.. yeah bugsmasher 12345 uhh squawk VFR, frequency change approved. If you want further flight following you can call other center on ____" I honestly found it funny... they're human too. I wonder how often that happens though... I bet that guy was reading/watching something or just zoned out as quiet as the radio was.