I'm wondering if it says foot rather than 'fool'?
I was just scrolling down to suggest that. 'Foot of the Wood' is a plausible description of where the parents lived.
Re-reading the baptism entry, I think it says that the witnesses were the Burgher Congr[egation].
There were umpteen splits and schisms of the presbyterian church in Scotland in the 18th century. In particular, in 1747 the Associate Session split over the issue of the Burgher Oath. This required anyone holding public office to uphold the prevailing religion. Those in favour of the oath became known as Burghers, and the opponents as Anti-Burghers. The Burghers split again in 1798. I won't bore you with all the details - if you are interested, search for 'anti-burgher' and you'll find plenty of information.
So it seems that your Robert(son)s were adherents of the Burgher Kirk rather than of the mainstream Church of Scotland. I speculate that David's baptism, not having taken place in the C of S, was not recorded at the time, so when it was brought to the attention of the C of S Session Clerk he decided to squeeze it in in its chronological place in his register.
It also tells you that David was baptised in the kirk itself. This is not something one can always assume because many children were baptised in their parents' home rather than actually in the kirk.
The baptisms of the other children are transcripts so I cant see the original wording.
You can, and really should, take a look at the originals on Scotland's People if you have not already done so. The transcriptions may be inaccurate (those of A******y are notoriously so) and the originals may contain other information, for example the names of witnesses or place of residence, or other clues such as 'Burgher Congr' in David's baptism record.
In the following record it names the father of the child as 'of Thornhill'. The use of the word 'of' in this context usually implies that whoever it was actually owned the named place, and it does not necessarily mean that he (it's almost always 'he') necessarily lived there. Though as there is a Thornhill close by he probably did.
Digression - when I was new to all this I came across one 'Alexander Leslie of Balnageith in Burncrooks' having children baptised in Rothes. I hunted for ages for a place called 'Balnageith in Burncrooks'. Eventually it dawned on me that he was 'Alexander Leslie of Balnageith' and he lived in Burncrooks. Balnageith is in the parish of Forres and Burncrooks was in the parish of Rothes.