Crossword clues for Popping off:POPNew Year's noisePOPSee 11-DownPOPWith 45-Across, students' unwelcome surprise ... or a hint to this puzzle's themePOP___ the question (propose marriage)POPChampagne-opening soundPOPSBursts, as a balloonPOPWord before quiz or artPOPBritney Spears's genrePOPBustPOP__ for (buy)POPDaddy-oPOPNew Year's Eve soundPOPSWeasel words?POP__-up (infielder's chance)POPKind of corn or gunPOPSDaddyPOPSThe old manPOPBreak, as a balloonPOPSBoston __ OrchestraPOPWord with art or gunPOPSSuddenly asksPOPGrammy Awards categoryPOP*Open noisilyPOPWeasel word?POPBalloon-breaking soundPOP__ psychologyPOPMusic store sectionPOPPEDAsked, burst open, extracted, or broke, as the ends of this puzzle's four longest answersPOPCork's soundPOPSStands outPOPBurst openPOPSExplodesPOPDrop by, with "in"POP1960s-70s; funk, early hip-hopPOPSOrchestra name reflecting its musicPOPIce-cream treatPOPCold drinkPOPBust a balloonPOPSee 9 DownPOPCork soundPOPBurst-balloon soundPOPSSmall explosionsPOPBubble-wrap soundPOPSDeflates with a pinPOPSStands out on the pagePOPBurst one's bubblePOPSDadPOPSStands out from the backgroundPOP___ of colorPOPExplosive sound