If you are looking for bulging arms but dont have a lot of time, try this routine on for size.  Do 3 sets of each exercise to failure:

1. Concentration curls
Purpose:
To develop the length and height of the biceps (biceps brachii).
Execution:
•    Sit down on a chair or a bench and hold a dumbbell in your right hand.
•    With your feet spread, place your right elbow up against your right knee.
•    Holding your left knee for support with your left hand, curl the weight up towards the shoulder making sure to keep your right elbow touching the knee (exhale).
•    Return slowly to the starting position (inhale) and then repeat.
•    Once your set is complete, switch arms and repeat with your other hand

2. Overhead tricep extensions
Purpose:
To develop the medial head of the posterior upper arm (triceps brachii).
Execution:
•    Sit down on a bench and grasp a dumbbell with 1 hand.
•    Lift the weight overhead and lock your arm at the top.
•    Keeping your elbow pointing up, lower the weight as far as you can behind your head (inhale).
•    Lift the weight back up towards the ceiling (exhale) making sure to keep your elbow pointing up at all times and then repeat the movement.

3. Hammer curl
Purpose:
To strengthen the muscles of the forearms (brachioradialis) and biceps (biceps brachii).
Execution:
•    Grasp a dumbbell in each hand with your palms facing your body.
•    Starting with your right hand only, curl the weight up to the shoulder keeping your elbow on your side pointing down at the floor (Exhale) and hands still facing in.
•    Slowly lower the weight all the way down until your arm is fully extended and then repeat with the left arm (Inhale).
•    Continue alternating while making sure that your palms always face each other!