2 Father's 1 egg

[sho220]

I think the only time that situation can truly happen is with twins, and you end up with two babies in the same egg who had different fathers.

I don't think its possible for 2 males to actually fertilize one embryo in one egg.
Example:
A spider male and a pinstripe male bred to a normal female, and hatching an egg that's a spinner...
...I don't think so.

Even with twins, from what I'm reading, one sperm reaches one egg, fertilizes it, then it splits into two...