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2.
The process where one person gives a handjob to another person with one hand, and fists said person's colon with the other.
Man I sure was bloody after that fullins!

Cordy can you come give me a fullins?

Jon you gave the most horrible fullins I've ever had.
by dirty sanchez April 05, 2004
 
1.
fooyin Domican word for ass hole. specialy taught to lil boys and girls substituing the word "culo"
Ahi me di en el fullin. Fuck!! I got hurt on my fullin
by Gdubs October 04, 2006