When Sue is addressing the high school students, she writes her name and draws a smiley face on the chalkboard. The writing and size/shape of the smiley face change several times when they are visible in the shot.
Mike and Frankie get a credit from the IRS and Mike reads the names on the check as "Michael and Frankie Heck". A person's name on tax returns are formal and should be: "Michael and Frances Heck".