Gumba Lump 

The fatty tissue at the top of the shoulders/base of the neck, usaually seen on your Gumba. This is where the extra pasta is stored. Many times there will be no neck to speak of just a large lump reaching the back of the skull. It wrinkles and jiggles with hand and facial expressions.

He's a good friend of ours , check out that Gumba Lump.

Gumba Lump by boombats March 8, 2006

Gumblumpkin 

The act of getting a blowjob from a girl with no teeth while sitting on the bowl taking a shit.

Your grandmother gives the best Gumblumpkin at the senior home.

Gumblumpkin by Big Mate July 17, 2011