The incident took place Sunday at Wrigley Field in Chicago, IL where the Chicago Cubs where playing the New York Mets.
The couple explained what happened in an interview posted by MLB.com.
"I was just trying to protect my lovely wife Ellen," said the husband. "And I accidentally spilled [her] beer on her."
The wife then jumped in and finished the sentence by saying,
"I just got livid and took my beer and splooshed it in his face. I figured if I'm wet, he might as well be wet too."
The couple admitted they found out the incident had gone viral after they started getting texts from everybody they knew.
"I didn't think they'd show me pouring the beer on him," the wife said laughing. "Sorry honey."