An/one's Achilles' heel |
And before you could say "Jack Robinson"... ; and, hey presto,... |
And sure enough! |
And that's flat! |
And, lo and behold, (there he was!) |
Answer / obey a call of nature |
Appear in a bad/good light |
Appear in/show one's true colours |
Appear/come on the scene |
Appearances are deceptive |
Armed to the teeth |
As bold/brave as a lion |
As busy as a bee |
As clear as crystal |
As cool as a cucumber |