“He’s got to show that he’s in this fight for real,” said Rick Wilson, a Florida-based Republican strategist who likes Bush but is neutral in 2016. “You don’t want to see Jeb angry, but you also don’t want to see him laying on the ground. Donald Trump ate Jeb’s lunch. Donald Trump drank Jeb’s milkshake … He’s got to get right up in Donald Trump’s grill.”…

Among the attack lines offered for Bush’s use:

“You think I’m low-energy? Let’s hit the gym. Let’s give you some stairs, bitch.”

“You know Donald, here’s the problem with you: You have gone bankrupt ten times because your’e actually a shitty businessman.”

“You’re disgusting.”

Wilson conceded that Bush was “temperamentally not suited” for such trash talk, but added, “Running for president means doing lots of things you’re not temperamentally inclined to do.”