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There is a bit of kissing, a brief looking down a blouse, a few innuendos and a mention of a "full-on robot chubby". A chubby naked space creature with a large rear-end plays a prominent role later in the movie, though this likely would not be perceived as visually disturbing.
Evil Bill and Ted are tasked with killing the real Bill and Ted, and this is mentioned quite a few times during the movie. There are explosions and gunfire at a couple points. At one point evil Bill and evil Ted are briefly shown being rough with the girls.
Several uses of "dick".One use of "fag".Some mild language. ("damn"s and "hell"s)One obscene gesture.
There is one quick scene where the grim reaper says, "see you real soon" to a man smoking.
The plot centers around the two main characters getting killed and ending up in hell. The scenes in hell have an eery atmosphere, and could be frightening to children.