ummm...i forget! Oh yea it's the inablity to put your finger on the right word, describes the state of NOT being able to remeber a wor that you want. It is also when guys talk to girls!
A guy walks up to a girl i a bar:
Guy: He...uhalabala *guy lingo for hey wats up?*
Guy: ummm...do you ahh ahh ahh...
the girls phone "rings" and its an "emergency"
Girl: OMG, i'm so sorry that was my brother, my mom just got hit by a car!
girl walks out of bar giggling with two of her friends and some other guy
Girl: gosh he was more lethological then most men
Guy yells after after her