1.   A smug smile curled around his lips.

2.   He reached past her to pick up the papers, a faint smile curling his chiselled lips as he scanned the typewritten sheets.

3.   A tight smile curled across his mouth.

4.   A self-satisfied smile curled over her lips.

5.   A smile curled across his lips, masculine and just a little smug.

6.   The same mischievous smile curled beneath the same soap-brush mustache.