1) To dupe, outwit, or fool one’s own perceptions, experiences and understanding.
2) To experience a mediocre event at best, usually relating to a sexual encounter.
1) The next morning I realized that I had drake too many beers and found out I had been Shangolded at the party.
2) With the remaining money from my promotion, my boss offered to take me to the whorehouse to be Shangolded, and I quickly said no!