funny joke- They finally met

[Ibrahim Ibrahim A]

A woman had 16 kids from her first
marriage, the husband died. She got
5 kids from the second, and the
husband died, she got 19 kids from
the 3rd and she died.
On the grave it was written " they
finally meet".
Man1: see what's written on the
grave. What do you think she met
the 1st 2nd or 3rd husband.
Man2: i think they are talking about
her legs.

[walax]

Honestly I dnt understand this joke... Pls try n explain to me