The 1st, 3rd, 4th, 6th, 7th, first 2/3 of 9th, 10th and 12nd sketches all include crude and sexual references and jokes, but the 12nd sketch would be the worst as majority of the events happening in this sketch are quite explicit, especially the names of the students.

Rowan Atkinson's character in the 4th sketch was kicked in the private part (only the reaction was shown).

He drove a car (implied) mild violently in the 6th sketch.

The 10th sketch contained some fighting between the hero and his twin brother just for the king's position.

2 f word (one bleeped, the other was mouthed), frequent uses of other profanities like hell, bastards, shit, etc.

Rowan Atkinson pointed his middle finger MANY times.

Only some wine drinking in the 6th sketch, not shown but implied.