Possible Clues:

• Gut reaction is to put in 'yes'
• Demonstration's almost over, but first put in complaint
• It's no go: it's trouble inside
• I rest up following record tummy upset
• Trouble inside to get inside, so it is
• Come in before it's a complaint
• Use the way in before it's sick of it
• Come in; it's trouble within
• Come in. It's trouble inside
• Come in; it's sickening