The big news about Matt Kalil's junk size has made him a marked man ... and "size queens" are on the hunt, or so we hear from a porn star who can relate.
Here's the deal ... Kalil, a former NFL-er, had his dong thrust into the spotlight recently when his ex-wife Haley Kalil said his size was just too much for her, likening it to at least a couple of Coke cans.
Porn star Girthmasterr tells TMZ … he can totally relate to Matt's story, since he found himself in the same situation more than a few times before his huge wang made him famous.