A proposal to build an airport on the Thames Estuary - dubbed "Boris Island" because of the Mayor of London's support for the plan - has been rejected by the commission looking into the future of Britain's airports.
Sir Howard Davies, releasing the Airports Commission's latest report, said the commission was "not persuaded" it was a workable option due to the cost, environmental hurdles and economic disruption.
Boris Johnson can take heart from the knowledge that his is not the only proposal the commission has snubbed. Sir Howard has previously said other ideas submitted by the public - including a plan to build a runway through the garden of BBC Radio 4 Today presenter John Humphrys - were a little "far-fetched".
Here's the best of those "far-fetched" responses to the Airports Commission's consultation.
1) Handwritten notes
From an unnamed member of the public who proposed a Heathrow with seven runways to compete with Schiphol airport in Amsterdam.
2) The person who (over the years) had also sent their plan to Boris Johnson, David Cameron, Gordon Brown and the Daily Mail
They included the responses in their proposal.
3) The Google Earth user
4) The idiom fan
5) The people who drew their own diagrams
6) The person thinking out of the box