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4.
male genitalia

Often used to alert caution about them.

Tackle is just an old fashioned word for equipment so it's the gear a man will need on his wedding night - he hopes. It's nothing to do with fishing or lures at all.
As the nurse placed a bowl of steaming hot soup on his lap, the old chap exclaimed, "Mind me wedding tackle, dearie!"
by Yeoman O' The Guard March 01, 2013
 
1.
Male genitals.

The tackle is a fishing reference.

Especially seems to be used when the male genitals are in danger. (Similar to how the english refer to their "Crown Jewels")
I came around the side of the house and there was a pitbull headed straight for my wedding tackle!
by lukeod May 20, 2005
 
2.
a reference to the male genitals as a lure for a mate, much like fishing lures are referred to as fishing tackle
My wedding tackle got tangled up in a bush.
by Ugly Dave August 29, 2007