An Alaskan Bullworm is a penile position where the erect shaft of the penis is held up against the stomach of the subject and the testicles are held by the free hand over the base of the shaft, with one testicle on either side of the shaft. the effect is a scene similar to the one in
spongebob where the position's namesake, The Alaskan Bullworm, is charging out of it's tunnel. The
worm is simulated by the penis and the tunnel simulated by the
scrotum and testicles.