Actual/believable secret cum (without them being able to find out)

Preferably people secretly cumming into someone but with a condom, shown in pic. The main topic is secretly cumming but without them being able to find out. Most of these vids show people cumming onto them and its hard to clean up, or in their mouths or onto things where the cum is so visible.

I found one vid thats in the thumbnail that is actually believable (I dont mean real, its just that they probably wont figure it out).

So preferably people cumming onto others without them finding out (into a condom or etc.), doing stuff with them (without them finding out), even cumming close to them. Also taking off the condom etc. but without them finding out later.

Also gullible/unaware/oblivious/naive is good too.

Preferably not feet as Im not looking for it but u can post it. Thanks.