"Three engineers and accountants" joke
3 engineers and 3 accountants were taking a trip to a conference. At the train station, each accountant bought their ticket. However, the engineers only bought one ticket for all three of them.
The accountants asked how they were going to get away with only having one ticket, and the engineers told them to watch and see.
After they boarded the train and it started moving, all three engineers locked themselves in the bathroom. When the conductor came to collect the tickets, he knocked on the door. The door cracked open and a hand shot out with the ticket. The conductor, not knowing that there were three people inside, took it and moved on. After he left the car the engineers came out. The accountants, were impressed, and told the engineers that they would try the same trick on the return trip.
On the way back, the accountants got one ticket, but the engineers didnt get any. The accountants laughed and wondered how the engineers were going to get themselves out of this one. After everyone boarded the train, and it started moving, the engineers hid in one bathroom, while the accountants did the same in the other one. Just before the conductor entered the car, one of the engineers came out, walked up to the accountants' bathroom, and knocked on the door.
Some people say the glass is half full, others say it's half empty. Engineers say the glass is twice as large as it needs to be.
Not enough votes...