Reply to Question about the One

Pretty basic question here but ive been learning to dj and am still not quite clear on this. I use traktor but that's not that important to my question. I like to play a lot to hip hop and reggae and in those genres musicians will often start there lyrics one or two beats before the one. When marking cues in songs would you mark a beat one count before the one where necessary and then start it from the 4 count when mixing it as to not cut into the lyrics?

I hope I explained my question well enough. Thanks