The opposite of square, but not an insult. A square is closed off, while a squiggle is open and can turn in any direction at all. A squiggle or being squiggle, is being very open and willing sexually, or a fun loving and party-hardy person, or very up-to-date with the latest trends and has amazing style or has an amazing sense of humor and is hilarious.
An alternative word for "cigarette". "squiggle" is an altered version of "squizzle", which black people altered from the word "square", which is slang for cigarette.