When Carla starts to judge the beer contest, Rebecca crosses the bar with a mug of beer for a "beer absorption test." At first the mug is mostly foam, but as the camera angle changes it is immediately mostly liquid without time for the foam to have dissipated.
Frasier Crane tells the regulars his father was a scientist who wanted him to go into psychology, who insisted on it, but died before he became one, but it is later shown in the spin-off "Frasier" that his father was a mid-60's ex-cop who moves in with Frasier.
Frasier explains this on "Frasier in the season 16th episode of season two when Sam Malone visits.
Frasier explains this on "Frasier in the season 16th episode of season two when Sam Malone visits.