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1.
Doing something only to undo it in a second
Doing something incompletely
"He just called me, but it went straight to voicemail. I guess it was just one of those onane calls. In India we simply call it a 'missed call'."

"He just inserted his dick in my vagina and removed it in a jiffy. I guess we can call it onane sex."
by chichora_no1 October 08, 2012
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