That was the only flaw in the ointment

This is a mash up of “fly in the ointment” and  “flaw in the logic”, both referring to a drawback.  Confusion may also be caused by the similar sounding words “fly” and “flaw”.   Thanks to Barry Eigen for passing this gem along!

She’s flying against the current

I heard this one at a meeting.  My guess is that the speaker was thinking of the phrases  “swimming against the current” (go against prevailing thought or opinion) and “off to a flying start” (good beginning), both indicating movement.  He may also have been thinking of the difficulty flying through wind currents.   Then again, as in many blended idiom mix-ups, the speaker probably forgot or did not know the accepted idiom.