When two or more Tumblr users with blogs of primarily erotic content are liking & reblogging each other's content in real time, meaning all parties are online at the same time, leading to mutual sexual arousal.
"Man, I was browsing through this hot lady's blog of sexy stuff last night, and the next thing I know, we were Tumblrfucking for about an hour or so. "
by Averagejoe316 September 28, 2018