A Father figure - usually old before his time, but experiencing a recent renaissance due to increased sexual activity - who, in an attempt to woo your girlfriend, pimps around an array of confectionery (nibbles).
'No way lad, your Dad is sound and all, but he was definitely trying to get in me drawers there, offering around his special box of sweets. I'd definitely say he was a nibble pimp if I didn't know better. Gash lad.'