1) The change in inductance obtained after sticking your penis in in the center of an inductor, measured in Henries.
2) A quantitative measure of how big one's member really is... using electricity.
Nerd 1 "Just stick it in the middle and I'll flip the switch."
Nerd 2 "This is as gay as nerdsex."
Nerd 1 "It will measure your indicktance level, which you can post online. Now stfu and hold it steady."