Singer Lily Allen was left red-faced after she made a saucy quip about another singer without realising her microphone was on. The pop star was judging acts on British TV programme Talent Show mobileAct Unsigned - when she took a shine to the frontman of band The Revenue. She said to pals, "He's fit. I would f**k him!" - but was stunned when she was told her microphone was still on. Single Allen split from her long-term love Seb Chew earlier this year (07).