The sexual attraction of a man towards a bike, commonly small bikes or children's bikes.

Men that are Bikesexual often have their sexuality associated as a choice or sexual preference, however it is considered a mental illness, like pedophilia or necrophilia.

Bikesexuality has never been associated with women before, and the reason for this is still unknown. However, the female gender is the only one to experience Hobosexuality (sexual attraction towards homeless people).

Men that experience Bikesexuality are often more commonly attracted to small/tiny bikes or children's bikes. This has nothing to do with pedophilia, but is believed to have something to do with the fact that men who are Bikesexual 'have a momentary lapse in brain function whenever seeing a bike, thus meaning they revert back to a child-like state, liking anything cute, shiny or small'.
Tricycles are especially appreciated in this circle of men.

Describing someone who enjoys performing sexual acts on a bike.

When you just dig bikes that much...

when you have hardcore sex with a bike you make rusty chain babies