How and when is one allowed to squeeze or suck the juices from fruits straight into one's mouth.
Various halachas pertaining to our fourth category "kevashim/shlokos" (preserved and cooked foods).
Automatic Toilet Flushers, Automatic Sinks, Soap Dispensers, Doors, etc.
Breaking up words on the cake (not letters); eating chocolates with letters, alphabet cereal, etc.