Down memory lane

Somebody was invisible,
Somebody is invisible,
Somebody will be invisible?

I have douche bag potential,
I am the silent killer,
I am not a cigarette,
nor a cancer cell.

I miss those days,
I miss those debating days,
I miss those pre-yinghua days,
I miss those yinghua days,
I miss those Morrill days,
I miss those 173 W 9th days,
I miss those days...