create implication cervical_penetration -> deep_penetration

Link to implication

For a guy/futanari to reach their penis into the woman's cervix, it would imply that the penetration has to be deep, if not outright ridiculous.

BTW, I wanted to ask how to determine how far in the penis has to be inserted before it's considered 'deep' when there isn't a cross-section to provide the interior view. The wiki says that only the testicles can be seen, but that doesn't help from an above view.

Maybe it can be treated similar to deepthroat?

What do you mean by that?

Deepthroat is defined as a fellatio but with the penis fully inserted inside the character's mouth.
So that would mean for this tag that the penis should be fully inserted inside the vagina^^.

Well that's pretty obvious at first glance. But it's more common for such deep penetrations (without a cross-section as a visual aid) to have about 80-90% of the penis inserted. Some examples of varying degrees of insertion that I'm thinking of include such (and yes, I know these are subjective):

100%: post #1882258, post #991778
80-90%: post #2142934, post #2366462, post #2267326
Less than 80%: post #466343, post #338382

The 100% instances would apply, while the less than 80% instances wouldn't unless a cross-section proves it's deep. My question involves the 80-90% range. Would those ones be considered deep enough to qualify? I wanted to ask before attempting to populate it.

The tag implication cervical_penetration -> deep_penetration has been approved.