Proceed with caution, ladies and gents: The following video will make you wish it was your birthday.

"Les Miserables" star Amanda Seyfried celebrated her birthday in New York over the weekend, smack in the middle of the press tour for the film. Co-star Hugh Jackman, who plays her adoptive father in the movie, gave Seyfried a less-than-fatherly birthday surprise: A rendition of the "Happy Birthday" song (yes, sure, dads do that) followed by a smack on the lips and preceded by a lap dance (dads don't do that).

Perez Hilton obtained video of the scandalous celebration, embedded above.