The term "LAF" has become popular slang for "laugh out loud." However, sometimes it's good to have alternatives. To express a chuckle, consider using terms like "chortle," "giggle," or "snicker." You might use "cackle" or "guffaw" to indicate hearty or boisterous laughter. Smiling without making a sound could be "grinning" or "beaming." "ROFL" or "rolling on the floor laughing" is a common variation of "LAF," but to evoke a similar image, try "in stitches" or "cracking up." Finally, if you're feeling funky, try "LOLing" as an alternative substitute.