When one shits into a condom, freezes it overnight, and shoves it up someone's anus without their permission or knowing about it until after the shit has been charged inside them.
I gave my girlfriend the Alaskan Surprise; I thought it was funny, but she hasn't talked to me in days.
Similar to the Alaskan Pipeline. The difference is that one participant is uninformed of what is inflicted upon them.
You violate her pooter with the frozen Cosby Kid while the lights are off. Halfway through the act you yell "Surprise" and turn on the lights so she can see you going at her with the big greasy poopsicle.
Adrian refused to cuddle with Adam last night after he found out Adam was giving him the Alaskan Surprise.