Extremely trendy term from NYC for genitals - male or female.
PROPERLY PRONOUNCED:
WILL-UH-MING-US
Generally used with an action verb such as:
Tickle my willamingus
Lick my willamingus
Bite my willamingus
Can also be used like:
Damn she got a fine ass willamingus
Thrust your willamingus into me
Or even more popular:
I got my willamingus crave up yo!