straight as a poker —(of posture) rigid; erect (also: stiff as a poker):
- He didn’t look a broken-down old man either: straight as a poker, and life enough in him yet.
straight as an arrow—
1. following a straight line:
- You won’t get lost if you keep to the track. It’s as straight as an arrow.
2. = straight as a poker:
- He stood tall, straight as an arrow, handsome, broad-shouldered.
3. honest and moral:
- He was straight as an arrow. He never lied nor did he ever run away from controversy.
4. (sl.) a heterosexual man:
- He is as straight as an arrow! He just likes to have facials done!