Possible Clues:

• Most common figure of speech, one of comparison
• Lies I'm finding in figure of speech
• Figure of speech, eg, as cool as a cucumber
• Comparison
• Float like a butterfly, say
• 'Sharp as a tack,' e.g.
• ''Pretty as a picture,'' e.g.
• Figure of speech making simple comparison
• Cool as a cucumber, e.g.
• ''Hot as a pistol,'' e.g.