So someone already posted how to use "sharp object" and can, and I still see people trying to do it by some "not working way". 1. Can is in inventory. 2. "Sharp object" is in inventory. 3. Left click and drag "sharp object" over the can, icon will become "orange highlighted", release. 4. Option appears to open a can. 5. Eat 6. If it does not work it is bug :D