An impromptu toast among friends.
A toast among friends.
Toast is less descript way to say impromptu toast.
exists s1 x1 x2.(a_topic(x1) & among(x1,x2) & n_friend(x2) & n_toast(x1) & a_impromptu(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & among(x1,x2) & n_friend(x2) & n_toast(x1))