Hi agressor1.An Indica strain will weigh the body down and relax it whilst a Sativa produces a more heady trip like experience.As for giggling easily and laughing thats more down to where you are,who ya with etc.I recall reading in a coffeeshop review once,about a girl who smoked some Laughing Buddha once and was falling around for hours!A good strain of skunk will have a combination of both the main strains.Have fun finding yourself a suitable strain.