fhumbs 

the big toes (thumbs) on your feet. if hands have fingers and thumbs then feet have toes and fhumbs.

kavin has weirdly proportioned fhumbs

fhumbs by her batman January 11, 2025

Fhubs 

Future Husband

I love my Fhubs, I can't wait until we're married.

Fhubs by BellaNella32 June 2, 2020

Frumbs 

A person who's thumbs are square, possible cousin the the kankles

Did you see her frumbs?

Her thumbs?

No, bro, her FRUMBS

Frumbs by Katertot September 21, 2016