First, ignore 'booger'. He is just a forum troll that attempts to impress the forum with his ignorance. Lives in NY, is on welfare, has no friends or life other than this forum.... truly a pitiful thing worthy of all of our sympathy..... yeah, right!!
In any case, your friend has some problems that weaken any potential claim that he might make. Some are:
- proof. Contrary to common thinking, a 'slip and fall' is not a slam-dunk case. The 'victim' would have to prove that the defendant KNEW of the grease prior to the fall. Also, that his injuries were sufficient to warrant additional compensation.
- your post says nothing about any post-incident treatment that would imply true injury. Such as physical therapy or pain treatment.
- Your post says that the insurance company has already offered to compensate for actual expenses (medical and lost wages).
What does he feel the 'value' of his pain was??? Depending on specifics, it could likely be only a few hundred $.
Simply, this incident is not going to be his 'lottery win'.