A guy went to his travel agent and tried to book a two-week cruise for himself and his lady friend. The travel agent said that all the ships were booked up and reservations were very tight at that moment, but that he would see what he could do.
A couple of days later, the travel agent phoned and said he could get them onto a three-day cruise. The guy was disappointed that it was such a short cruise, but booked it . . . and went to the drugstore to buy Dramamines and three condoms.
The next day, the agent called back and reported that he now could book a five-day cruise. The guy said, "Great, I'll take it!"! and returned to the same pharmacy to buy two more Dramamines and two more condoms.
The following day, the travel agent called yet again, and said he was delighted that he could offer them bookings on an eight-day cruise. The guy was elated and, and went back to the drugstore. He asked for three more Dramamine and three more condoms.
The pharmacist looked sympathetically at him and said, "Look, I'm not trying to pry. . but, if it makes you sick . . why do you keep doing it?"