samantha. Omg and lol are not "words" that are used in normal conversation. They are abbreviations used originally for texting where you were once limited to 180 characters. It started "sometime" by "someone" and just caught on. We will never know exactly who or when. To this day. there is confusion about lol. To some, it's "lots of love", to others "lots of laughs". It's just "text speak" and you and your friend's can make up your own.