"twodicksinhi" seems to be a mix of English and shorthand terms commonly found in porn tags. Here's the breakdown:
- "two dicks" refers to a scene involving two penises (usually two men having sex with each other)
- "in" could mean that one penis is inside another, for example during penetrative anal or oral sex
- "hi" might refer to a high angle shot or a specific position where the person on bottom is raised above the one on top
So, this tag would suggest a scene with two men having sex where one is penetrating the other in a high position.