Bates, 66, who was nominated for best supporting actress in a series, mini-series or motion picture made for TV, for her role in 'American Horror Story: Freak Show', said she did not actually scream in pain, reported People magazine.
"I actually let out a yelp because I couldn't contain my excitement at meeting Allison Tolman," she said.
Bates even danced at the HBO after-party.
Both Bates nor Tolman failed to win despite their respective nominations. She lost the award to Joanne Froggatt of 'Downton Abbey'.