Can someone please tell me what these stand for?

The are not commonly used or accepted abbreviations. They look more like someone just hitting random keys.

In what context did you see these?

ADSDJK = Animal Doctors Share Dentist Jokes Kay

PIFIOF = Piss In Front In Off Front

basically, people just use these abreviations on msn if u no what i mean

I seen these in Typing Master. They don't mean some thing, just typing practice for keyboard.

asdfjk is just what a touch typist's first 7 keys are, it doesn't mean anything (first 7 keys on the 2nd row of the keyboard, excluding g and h.

PUFIOF doesn't seem to mean anything

FAIL