I believe the missing line is 'He'll set at sixes and sevens'. This is alluding to the fact that the 'friend' in question with whom they're attempting to hook up with this woman is 'at odds, or unsure of' the current situation:
http://www.word-detective.com/2012/01/at-sixes-and-sevens/
I believe the missing line is 'He'll set at sixes and sevens'. This is alluding to the fact that the 'friend' in question with whom they're attempting to hook up with this woman is 'at odds, or unsure of' the current situation: http://www.word-detective.com/2012/01/at-sixes-and-sevens/