Lyric discussion by radtasmic 

Cover art for Send Packing lyrics by All-Time Quarterback

honestly, it sounds like it's a song from the perspective of an adult going through a divorce. the parent obviously has a drinking problem ("With every movement everything sags I drink till I’m sober, and start again")

this was really the part that made me think it was about a divorce: "If I’m sent packing, and I’m giving up Rights to the children, the keys to the truck"

the last part fits because it shows the two parents have argued so many times but nothing really changes: "I’ve nothing to say That we haven’t gone over already I’ve nothing to say That we haven’t gone over already"