i have that
i've had it since spyro the dragon. and yes. i did that in portal 2 also.
I too suffer from gaming OCD
I feel your pain Yotam! Though mine tends to cause me to play games to completion (all secrets, achievements, etc), I also painted that entire room white, for no other reason than to laugh incessantly at the idea of "Bukakke with Portals"
I have a problem too
Not gonna lie I did that in the chamber where you need to unpen the deadly white moon rock gel and cover the two towers I did the whole room just for shits. Really big room. T.T
That's not OCD...
This is sooo funny i especially like the part with tetris a tip for a another flash portal joke about the girl thinking white gel is sperm