Half dome 

Is when a woman with a shallow throat performs oral sex

Yeah dude I got half dome from this chick with a small mouth.

Half dome by Setucker August 14, 2017

Half dome 

Is when a chick gives you head and some one calls or interups her resulting in blue balls

Tim had to be a cock blocker so abby didn't finish what she started she busted a half dome

Half dome by Kaaaaaaack June 25, 2009

Half Dome 

The big, rock hard dick of a mountain attracted to the sun.

Gee the mountain in yosemite really couldn't keep that half dome in its pocket.

Half Dome by Siberiansub December 11, 2011

Half-dome 

To “half-dome” is to engage a person of the opposite sex in rigorous activity for an extended period of time thus rendering their legs inoperable and your own appendages exceptionally sore. Normally, this takes around thirteen hours to complete.

I'd half-dome your mom if I had thirteen hours to waste.

Half-dome by I-got-Domed June 29, 2011

Half dome activities

A phenomenon that occurs at UCMerced that describes the rampant sex and cheating that goes on at the Half Dome building on campus.

Damn bro my girl and I broke up and she lives in half dome.

Damn, you know she’s up to some half dome activities.

Half dome activities by William Bakespeared April 1, 2022