I once made a first date eat me out while I was laying on a picnic table in the park. He said his jaw got tired (after 10 minutes) so I told him that he better get me off and made him fuck me from behind while bent over the table. He couldn't go for more than 5 minutes because there were bugs.....
He did not get a second date
He got tired after 10mins of eating you out? Got to spend at least 30-40mins down there until she cant take anymore