Crossword puzzle clue "i can't remember this guy epithet"

"I can't remember this guy" epithet

“We do not remember ___, we remember moments”: Cesare Pavese

"It's all ___" ("I can't remember")

As long as one can remember

Before any of us can remember, perhaps

"Everything's a ___" ("I can't remember it clearly")

"I can't remember if I ___" ("American Pie" lyric)

Grammy-winning LL Cool J song that starts "I've been watching you from afar for as long as I can remember"