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.
In any case, it's best that you're actually able to see the male on top of his partner.
The following tags are aliased to this tag: guy_on_top and male_on_top (learn more).