>> What do you call 2 Romulans together?
A dissident cell.
>> What do you call 3 Romulans together?
A dissident cell with a traitor in their midst.
How many Romulans does it take to scew in a lightbulb? 20! 1 to screw in the lightbulb, 5 to supervise for the Empire, 5 more to manipulate the senate for more funds related to the bulb changing, 5 more to plan an assassination of the one who is screwing in the lightbulb, 1 more to assassinate the assassin, and 3 more to plot a takeover of Vulcan using the lightbulb as cover!
How many Redshirts does it take to screw in a light bulb?
-> Three. One to screw it in and two more to drag off his body.
Four men (a Romulan, a Klingon, and a Vulcan, and a Terran) are on a shuttle. The Romulan throws a half empty bottle of Romulan ale out the airlock. When the Terran and the Klingon react with surprise, he explains that "That ale tasted awful. Back home on Romulus, we have much better ale!" So then the Klingon throws a bat'leth out the airlock saying, "That bat'leth is too dull. Not like the ones we have on Qo'noS."
Then the Vulcan stands up, grabs the Terran, and throws him out the airlock, saying "He was emotional."