Nautical LEDs
High quality lights for your ship Buy here your navigation lights
Seeing this ad in this thread somehow reminds me of engineering pick-up lines:
"I'm like a diode, baby. Once you go my way, you never go back." 
"Hey sweetheart, let's get in bed and test newton's third law of motion." 
"Mmmmm, I'd like to take the integral of those curves!" 
"If you don't let me plot my pole on your jw-axis, I'll have to go home and use the right-hand rule." 
...and so on.
Now
THAT'S crossing the line.
annnnd the smileys just made it worse.
um... I'd better stop now, huh?
*retreats to a dark corner, crying*