(mac-niv-on)
a word used to describe the act of fingering ones bum hole during sex/masterbation. They may not be fingering there own bum hole, it may be another party i.e a girl or gay partner
That man looks like he macniven's himself.
he asked me to macniven him...
The name for when someone has a sister, so fit, all of his mates wants to sniff her arse. This lad will often be Scandinavian, which makes sense as everyone wants to ‘Finnish’ inside her. (Although they will most likely originate from Norway).
My mate is a right Renemmo.
