Noun: A sex act in which a male starts fapping (masturbating) to internet porn only to be interrupted by his cunty wife coming back unexpectedly soon from the shopping mall. When this occurs, the male must quickly shut down the porn site, pull up his pants, and make it look like he was researching do-it-yourself home renovation projects on some girly home improvement website. Similar to coitus interruptus but refers to only male solo sex acts.
Robert: I was in the middle of jerking off to big titty porn when my stupid wife came back too early from the mall.

Dan: Haha! Fappus interruptus! Did you get caught?

Robert: Nah, I pulled up my pants and browsed to some gay Martha Stewart endorsed home improvement website.
by Cunty Joe September 24, 2016
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