I think it is unintended behaviour. After some time using a male butt bug as anal toy while having a orange butt bug, I get the message that the orange butt bug lays an infertile egg, because she had never sex with a male butt bug. The same happens if using a wild male butt bug.
Prerequisites:
Having a orange butt bug in butt
Have a male butt bug as a toy
To replicate:
1. Masturbate with male butt bug anally
2. wait some time(usually sleep)
3. get message about infertile egg.
Prerequisites:
Having a orange butt bug in butt
Have a male butt bug as a toy
To replicate:
1. Masturbate with male butt bug anally
2. wait some time(usually sleep)
3. get message about infertile egg.