Velocipedes!
Despite what you may think, this isn't a cross between Raptors and caterpillary typed with millions of legs, it's a form of wheeled conveyance, very popular amonsgt the 'keep fit' set.
Popularly known as bicycles due to the duplication of wheels, it is also known as a pedal cycle, due to having pedals to propel yourself forwards. All fine and dandy. Then some gormster comes along and calls them summat else.
Pushbikes!
Help me out here - what the blinkin' flip is a pushbike? Sounds to me like placing your hands upon the spine of some chav trollop and shoving her forwards! But you don't push a bicycle...
Now, there are certain types who will say that when you're crossing a road at the light, you dismount and push your bike. do you arse! You wheel it along beside you - you don't get behind and push it!
The nearest things to a pushbike is a scooter, where you push along with one foot. But all that is is a glorified skateboard with a stick on it! About the only wheeled conveyance you can push is a [insert supermarket brand] trolly or a perambulator!
Pushbike indeed!
Push you off yer bike if you carry on like that!