I mean I guess it could also be a case of him being retarded and doxing himself again like he often does too. But I am just assuming that in between cruising yelp he looks up bears.
I have seen many examples of spam in my life, from fundraising/political causes to websites I purchased from trying to squeeze me for more business. I’ve had to assist elderly relatives in recognizing spam since they’d wind up getting scammed themselves, or I’d wind up receiving spam messages from them over Facebook/email due to their clicking on some stupid link.
I have *never* seen, much less received, XXX spam. The closest I’ve seen to it is when you click on a video, and a new tab with said video opens, while the first tab loads to a cam website like Chaturbate. Either that, or the pop-ups that creep up from the bottom of the window with a sexy pic and mileage proximity. You know what I’m talking about

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there are horny singles in your area that so badly want to meet you!
I’d say the latter is more likely in Jack’s case, if it’s x-rated spam. He was probably perusing hardcore gay bear material on some shadowy, degenerate site that asked for personal info. Rather than recognizing that the best way to ensure that one’s porn tastes stay on the DL is to leave as little trace behind as possible, he still gave his credit card or (at least) cell number. Most people whose brains aren’t rotting away can pretty easily spot a bullshit website/pop-up just by the way it appears aesthetically. But not our Jack, no siree.
This gives me a thought: With Jack’s brain liquefying more with each passing day, what’s the likelihood that he’ll answer the phone one day to some pajeet who implores him to join a “sweepstakes” or give money to free up his “millions in existing funds waiting for him in Nigeria?” He could very well fall for that, given how much he’s already deteriorated. Tammy finding out that her accounts and savings have all been wiped clean because her dearly beloved mushbrained the fuck out over what was clearly an obvious scam would be fucking delicious. Especially when you consider that she admitted during the infamous podcast to marrying Jack because she wanted a man that had potential, and she saw him as such.