NO not all sativas make you giggle, and some indicas will do it too. I would start out looking at Legends Sweet Skunk S1. The Sweet Skunk I smoke is very giggly weed for most people who smoke it.
Apollo 11 is exactly what you are looking for. Check this description out.
"This indoor hybrid has a high calyx/leaf ratio & finishes flowering in 7 weeks or less. Our big-yielding, lemon-scented female clone named Genius because of her CLEAR, energetic, thought-provoking high was crossed with a robust Cinderella 99 male to create Apollo Eleven. Expect some variation among individuals. The best females are short, heavily branched plants with multitudes of dense, resinous bud sites - perfect for SCROG. The smoke has a sweet citrus flavour. The high is UP & HAPPY. The picture up top is a few buds on one of the females. It does have a very mild tropical fruit smell. It smokes smooth and has a great high. I think you will be very happy with this one."