They vary in length - from very short (a couple of lines) to fairly long (more than a couple of lines).
After the main body of jokes there is a section which explains each one for readers who might not have fully understood the joke.
This could be useful for readers who are not native speakers of English - or even readers from other parts of the English-speaking world where the humour (or humor) of some jokes may be incomprehensible or opaque or even missing.
Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, CY, CZ, D, DK, EW, E, FIN, F, GR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.