A limp, flaccid penis. May also be used to slap and flap someone about their face or some other part of their body.
I gave my sister the flap noodle after she refused to wake up and get out of bed and come to breakfast.
Rachel sucked me off. She wanted more. I didn’t so I gave her the flap noodle and told her to go to sleep.
I drank so much I gave myself the flap noodle. I couldn’t even rub one out.
The nut cutters are really showing off my flap noodle.
My step mom walked into the bathroom and was eyeing my flap noodle in the mirror.