Someone is really not getting the concept that lying is about the intention to decieve.

The figure on the bus is intended to create a misleading impression of the amount of additional money that will be available to the UK. Quoting gross rather than net is precisely the issue.

We all have our opinions on the figure on the bus. Nothing is to be gained by debating it further.

On the other hand an understanding of the readiness of Boris Johnson to mislead is relevant, but rather more in the 'Leadership'thread.