When a male is on top of someone else, which doesn't always have to be sexual.
In a sexual situation, this tends to be associated with the doggystyle or missionary positions since the receiving partner is on the bottom in those cases. Paizuri is also an option since the male needs to be on top to put his penis between the female's breasts, but she needs to be lying on her back rather than standing or sitting. However, it's best that you're actually able to see the male on top of his partner. Artists utilize techniques such as disembodied genitalia, invisible men and point of views to eliminate the male so that the image focuses on the female.
The following tags are aliased to this tag: male_on_top and guy_on_top (learn more).