Would you be opposed to it if it were a just us thing? Among wizards, there is such things as are called inside jokes, I suppose it is used to press upon a feeling of exclusivity to the nature of the comradeship. We could call it such a thing, along with the whole ah.. cow-tipping information that you now know that I have too much knowledge of.

[ Even if they had not tipped a cow, forevermore would Astarion knew that it was a thing outside the walls of Waterdeep during the fast and fleeting summer months and they had bonded over cows.

It was sort of like friendship, perhaps? And even back at Camp, they had formed a truce of sorts in which Astarion turn his back when rolling his eyes at him and Gale turned his back when Astarion was convincing Tav to do nasty things(tm) ]