But Jonathan's job description quickly swamped the internet, dominating headlines about the show.
And Twitter just couldn't cope with it.
Even the official account for David Farrier's Tickled documentary got in on the act.
Host Chris Harrison explained that Jonathan isn't actually a professional tickler - he's a doctor.
But the show is trying to have some fun with contestants' descriptions.
"That's kind of what he does, that's his thing," Harrison said.
"We figured we'd have some fun with these labels," he said. "It's not necessarily what they are - it's kind of who they are."
In his biography, Jonathan described himself as "pretty open to most things" when it came to the bedroom.
"I ensure both of us are satisfied. Pretty open to most things. Usually last a long time (in a good way)," he said.
For the record, Lindsay is an attorney. And Jonathan is just one of 31 men vying for her heart on the reality show.