I'm just casually resting in bed when a strange creature comes down and frightens me! It sticks a long tentacle down my throat that I later learn is its dick and then instructs me to measure how much I took. The alien then makes me continue, as the aliens are on a mission to investigate human physical abilities and pleasure skills starting with the throat. The alien dick is far superior to a humans and by the end I'm asking to come back with them to their home planet!