Should Old Acquaintance be forgot,
and never thought upon;
The flames of Love extinguished,
and fully past and gone:
Is thy sweet Heart now grown so cold,
that loving Breast of thine;
That thou canst never once reflect
On old long syne.
CHORUS:
On old long syne my Jo,
On old long syne,
That thou canst never once reflect,
On old long syne.
Source for the Verse – Wikipedia.