A giant, pink, will-eat-anything worm from Alaska. As seen on the episode of Spongebob Squarepants when a fish-guy's butt got eaten. Along with Sandy's tail.
"But it's an ALASKAN. BULL. WORM." -Spongebob
"Come home before curfew or you will get eaten by an ALASKAN BULL WORM." - your mom
The act of taking a Popsicle, and using it as a dildo in your partners anus. Once the Popsicle has melted in the anus, you proceed to have anal intercourse until you spunk in the anal cavity. Once the spunkage has stopped you proceed to suck the sweet and salty mixture out of your partners anus.
"yo bro i was gonna rail my girl last night and she turned around on me and told me to give her a Alaskan Bull Worm"
When you color an uncurcumsized penis green and then ejaculate over a girls ass while she farts so it sprays right back onto your penis. This will undoubly make your dick look like a worm covered in snow from alaska.