When someone / something gets one over you.
1) TONY: I worked so hard this Summer to pass my dental exams. I know Suzy has been partying the whole summer, hasn't attended a single lecture and finished the exam 15 minutes before I did. Yet she still got higher marks than me..
ME: Yeah mate she afghanisted you.
2) DRU: Kelly you just missed the turning for McDonalds!
KELLY: Sorry! The turning just came out of nowhere!
DRU: The road just afghanistaned u.
3) DRU: You came with that girl and now she's dancing with another guy. Look!
PETE: I just got afghanistaned :(