shelunking
Similar to spelunking (cave exploration). Exploring the dark crevices of a woman’s nether regions.
Dude I was shelunking on Broomhilda last night and I think I sprained my tongue.
Shelunking
To bury your penis to the base and or bottom out in her vagina.
Last night I was shelunking my girl so good that all she could say was "to deep, to deep".