Moist William 

A Moist William is the act of barely inserting your erect penis tip inside an excited girl's wet vagina, promptly pulling it out and sliding the residual vaginal fluid on her inner thigh. The movement should be done in a swift "paint-brush" fashion. After this, for the Moist William to be complete, put your clothes back on, pack your belongings, leave without saying a word, and never call her back.

Aye brody, last night Yanni told me he gave his girl a moist William. She was so confused.

Moist William by Bravo MNGMT May 2, 2017

Moist William 

The act of sticking your finger up a wet vagina and promptly sticking it into another person's ear

My girlfriend was misbehaving, so I gave her a Moist William as punishment.

Moist William by Fowneslark February 8, 2014

Sufficiently Moist William 

A more proper way of saying wet willy.

John: Would you like a wet willy?

Adam: Hell no!

John: Would you like a sufficiently moist Willam?

Adam: A what?

John:*gives sufficiently moist William*

Sufficiently Moist William by NGMMSB February 12, 2018