To cut a hole in a poster / picture / photo etc usually around the mouth or crotch, and proceed to perform lude acts involving your penis and/or toungue.
Wow, I got a Christina Aguilera poster and she's so hot!!!
*late that night, he cuts a hole in the poster furtles it*
This word can meananything that you want.
Best used when memory loss has occured or when there are people around that wouldn't appreciate the word that it is intended to be.
"Look at the furtle durtle on that!"
In this case furtle durtle means VW beetle bonnet on a Lady in extremely tight pants in a crowded drinking establishment.
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!