finger bum wank (FBW) 

insertion of a finger into the anus whilst "jackin it"

"jeff likes to finger bum wank (FBW) with himself"

finger bum wank (FBW) by lazycouchpotato7 July 30, 2008

Finger bum flank 

The act of kissing ones partner standing face on and flanking a sneaky finger into the anus to cause surprise

Michael was under the impression dale just wanted a kiss. Little did he know Reza was setting him up, face on for a finger bum flank

Finger bum flank by DoctorZig August 14, 2016

Soapy Finger Bum Wank 

The act of fingering your asshole with your finger/fingers covered in soap, while masterbating.

“I was struggling to get myself off so I decided to have a soapy finger bum wank”

Soapy Finger Bum Wank by KD Jackel October 17, 2021

Finger bum bill 

Guy who tries to put his finger in your bum when your mum makes you have a bath with him as a young kid

Oi finger bum bill remember you tried to finger me when we were kids

Finger bum bill by Finger bum bill October 24, 2022

Finger Bum Wank

Putting your finger in your bum to aid wanking if you have taken a load of oats and it's taking a while!

I opted for a Finger Bum Wank last night

Finger Bum Wank by J-Boner! October 9, 2008

finger bum wank (FBW) 

a particularly sick individual who is not satisfide with the usual five finger shuffle, and feels it nessecary to penertrate his own rectum with 1,2 or even three fingers whilst beating one off, adding to his own miss guided feeling of sexual gratification.

i was going to have a wank but i thought fuck it why not have a finger bum wank (FBW) i deserve it!

finger bum wank (FBW) by franklin B wankface June 19, 2006

Finger-Bum 

to place ones finger, in ones bum whilst under instruction to only place fingers in the vagina.

"OH MY GAWD, MEXICAN! WHY DID YOU FINGER -BUM ME!! THERE WAS NO BUM CONSENT!"

Good ol'Finger-Bum

Finger-Bum by Dan&Indi September 8, 2016