If you remember the NES game M.U.S.C.L.E. as one of the worst (and silliest) timewasters in all of history, then these tiny USB wrestlers are just the thing you want exercising suggestively on your desk.
In Japan, these fellows are well-known figures from the Kinnikuman manga. Elsewhere, they would probably be more recognizable if they were made of rubbery pink PVC (or NES-era pixels).
They look like flash drives, yes? No, that would be useful, and we can’t have that. Instead, these guys exist only to hump your actual USB devices into oblivion. Alternatively, if you’re looking for any excuse to put off doing anything productive while sitting at your computer, you can stage tiny, awkwardly-positioned wrestling matches.