A guy who can make a girl laugh has the edge over less-funny suitors, say Stanford School of Medicine researchers. They scanned girls’ and boys’ brains as they watched funny videos and found that girls’ brains showed more activity in the amygdala and midbrain than guys’. Meaning: Women have evolved to desire humor in a partner. “Humor provides women more information about male ‘mate quality’ than meets the eye,” says Pascal Vrticka, Ph.D. Not the funny type? Focus on listening and asking thoughtful questions. Both are proven turn-ons. No joke.