Cumtage
The act of many men cumming on a wall multiple times for several days, whereafter the work is framed and displayed as a decoration.
We got tired of the posters on the wall in our apartment, so we decided to make a cumtage.
Cumtag
The act of taking a pic of cum or cumming on a mobile screen with the porn profile, pic, or DP of the person being cumtagged, to invoke a sexy response.
"Baby, you made me so hot, I couldn't help it! I had to cumtag you"