Made my inlaws a cup of tea while they visiting. Fils wife (step mil) had a phone call so she put her hot tea (freshly made 5 minutes ago) on the floor while my 16 month year old dc was playing on the same floor. I didn't notice until I came into the living room, fil and dh didn't say anything (they were in the same room). AIBU to think this is quite careless and you have to be really careful with hot drinks around young children and certainly not put them within easy reach.