guy 1:  dude, how did you get that bruise?  guy 2:  i don't know, i guess i had an alien abduction last night
the night after a lot of drinking when you wake up and can't rememeber the events of the previous night
"guy 1:  dude, how did you get that bruise?  guy 2:  i don't know, i guess i had an alien abduction last night" What is the definition of "alien abduction"?