A friend of mine is looking for a place in Laurel or Odenton that can accomodate 15-20 somewhat rowdy people for drinks and hopefully decent food, mostly sandwiches and appetizers.
Especially if you can get the basement room, try Oliver's, 531 Main Street, Laurel. Another possibility would be the Green Turtle, 14150 Baltimore Avenue. Both better choices for a "rowdy" crowd.