This is the ever-popular stfu (shut the fuck up) spelled out. After all, if you are too goddamn fucking lazy to say 'shut the fuck up' so you have to say 'stfu', why don't you just shorten it up even further and say 'stiphu'
taken from "Mid-life crisis"
which is at 50
quater being 25
one can get quarter life crisis from any of the below
1) Not married
2) Feels so old and still wants to be in college or high school
3) getting Married