keepa "I couldn't --- straight face!" "Can you ___ secret?": 2 wds -- straight face -- stiff upper lip -- low profile -- cool head ___ straight face (resist laughing): 2 wds ___ low profile "___ civil tongue in your head!" Maintain one's composure as warder, say, after row during meal left one a little peeved Low profile ''I couldn't ___ straight face!'' ___ straight face (don't crack up) __ straight face