On the date of 11th Jan 2017, i went shopping with my son at Toa Payoh HDB Hub level 3 Kiddy Palace. Upon reaching there, my son wanted to visit the toilet to relieves himself and so we went to the male toilet at that level. Whilst washing our hands at the wash basin area, my son suddenly cried out in pain!! I turned my head to look at my son whom was standing right on my left side, he was already in tears and his hands holding his right ankle, i looked downward and saw his right foot which is already struck in this ugly lookinghole on the floor!!