The word 'use' has a degree plurality here.
It can be a vague word and its meaning is
determined by the context of its usage.

The common interpretation the 'use' of
Marijuana:

To smoke marijuana.

President Clinton's 'use' however...
To smoke and inhale the Marijuana fumes.
When subsequently discovered that he did
'use' (first definition), he argued that he
'smoked but never inhaled'.

Because of society's conventions, many would not take his view seriously and a few may even accuse him of 'verbal- hairsplitting'.

If, however, plurality (such a virtue according to Barthes) were carried to the extreme, Clinton's defence would not be sidelined as 'verbal-hairsplitting' but instead be on the same level of those who took  the  conventional definition of use.