The act of using one's finger to motorboat either yours or someone elses' lips. Usually results in a burbling sound being emitted as air leaving the mouth is interrupted by the motion of the finger.
Jessa's swollen lips were so big, I just had to get in there and Finger Motorboat them. They were totally built for speed and comfort.
by Bromancer20 July 21, 2009
Get the Finger Motorboatmug.