Green Day I Saw My Parents Kissing Santa Claus

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I saw daddy kissing santa claus
Underneath the mistletoe
Last night
He didn't see me creep
Down the stairs to have a peek
[Mike screams 'oh god!']
He thought I was up in the bedroom fast asleep

Then, I saw mommy kissing santa claus
Underneath the christmas tree last night
There must be some mistake
Was I really awake?
I move in closer, but better look away

[Mike and billie make barfing noises]