The father (male) is going to his (referring to the father, also male) high school reunion on Saturday. ‘His’ replaces ‘father’ while still retaining the same meaning.
man i can't wait for school today i have been bulled a lot but its ok first day starting proud man i can't wait for this trip can't wait to go on a real rollercoaster man Sama looks really cute today can't wait to see her smile