a sword fight between male genitals, the harder you get the bigger advantage you get but also the more embarrased (if participating in a non homo-sexual version of feckling)
An unplanned "love child" as a result from ones unadvised decision to have sexual relations with the opposite sex without any form of protection.
Dude! Fuck, I can't believe I'm gonna be a dad!
Yeah maybe you should have worn a condom when you had sex with Alex so you wouldn't have created a fuckling.