A
man or woman who tells you too much about themselves on your
first meeting such that it feels
like they are ejaculating information all over you.
"
Man that guy Rob wouldn't stop talking about himself last night at the party. He was really jizzy"
Friend 1: "How was your date last night?"
Friend 2: "Well he was trying to put the moves on me by telling EVERYTHING about himself. It was really jizzy"