It is infrequent, but does happen. For a politician to stick his foot so far down his throat his toes are coming out the other side has to be an idiot.
If he doesn’t understand that basic concept he has no business running for Senate. He should back out and let someone who has a chance of winning run.
You are likely correct on the placement of the foot, however,
I doubt he really believes intercourse does not equal pregnancy when the conditions are right. I believe he was suggesting the possibility was perhaps reduced based on some studies done on animals. Not to suggest any relationship, but stressed cows are less likely to conceive or maintain a pregnancy. I know, I know.
With the time line for other candidates to get in the race, the problem is now the GOP’s to deal with.