LACLIPPERS

PEACHYKEENDandy OHFORGETITReaction to the unsuccessful "conversation" in this puzzle SINGLEFILEHow students often line up HALFSECONDSentient computer following subordinate for a moment EQUESTRIANIs Queen Rat travelling on horseback? GEOLOGICALRelating to the study of Earth INSTIGATORPopular man occupying dump next to a hill is prime mover HALFEXPECTConsider possible, but not guaranteed PATTERSONGMaybe Humphries' alter ego beginning to grasp Gilbert and Sullivan's speciality CASHBUFFERMoney set aside to cover emergency expenses YOUREMUTEDResponse to "Good morning, everybody!" UNPUNISHEDWithout ramifications, joke locked in redbrick outhouse? (10) ACETICACIDOne on prickly cacti I found on surface of desert – that’s sharp! (6,4)