Something that spoils or ruins an otherwise enjoyable event, esp. when in relation to ruining a drunken or drug-induced high.
We were having a great time at the party until Jim puked all over the floor. That was a major buzzkill.
I was jerking off and then my dad walked in, god what a buzzkill.
Spooge, cum, semen, ejaculate. SPLORCH!
I splorched all over that bitch's face and in her hair.