During the summer of love, people hung out outside, sang songs and had sex, producing kids with stupid names like "Flowerpuff." But summer lovin' is what happened to Sandy and Danny in Grease. This Thursday, combine the two by bringing your significant other to a free outdoor screening of Grease in Sundance Square, singing "Summer Lovin'," and later having sex, producing a child, "Love Biscuit." Sundance Square is in downtown Fort Worth at the corner of Main and 4th streets. Gates open at 7 p.m. Visit sundancesquare.com.