WWE Superstar Grayson Waller has thanked Carmelo Hayes after making him sign merchandise for one of his family members, which also included a contract for the NXT North American title.On the developmental brand, Waller portrays an obsessive character who is often seen boasting about his in-ring abilities. As far as Hayes is concerned, he is the current NXT North American Champion in his second reign. Earlier this month, he successfully defended his title against Tony D'Angelo.On the latest episode of NXT 2.0, Melo signed some memorabilia for Grayson's family, including a basketball, t-shirt, and posters. However, it came to light that Waller had tricked Hayes into signing a contract for a North American Championship match on next Tuesday's Great American Bash.After the match announcement, Waller posted a photo of the signed basketball on social media, calling Carmelo Hayes a "good guy."He also added the champion's catchphrase "Melo don't miss" in his post, possibly alluding to the latter's inability to understand the trick.Here is what he wrote:"Good guy Melo signing this for one of the lads back home. Don’t forget, Melo don’t miss #WWENXT"You can check out the tweet below:Grayson Waller@GraysonWWEGood guy Melo signing this for one of the lads back home. Don’t forget, Melo don’t miss #WWENXT16823Good guy Melo signing this for one of the lads back home. Don’t forget, Melo don’t miss #WWENXT https://t.co/td6ryWUbL6You can check out the results from this week's NXT HERE.Fan reactions to Grayson Waller's tweet about Carmelo Hayes sending him signed merchandiseGrayson Waller is pretty active on social media and never leaves a chance to speak his mind.The interaction between the two NXT stars seemed to have drawn people's attention, and Waller's tweet garnered quite a few reactions from wrestling fans worldwide. Here are some of the best of the lot:A girl has had an interesting request for Waller:Allison Hargreeves Hate Account@DuaLipasass@GraysonWWE Can you get my marriage certificate to my crush signed too1@GraysonWWE Can you get my marriage certificate to my crush signed tooA user came up with a twist to Waller's surname following the basketball saga.The Next Ten@TechTreeX@GraysonWWE Grayson Baller@GraysonWWE Grayson BallerThis use claimed to be Grayson's number one fan:soli@whoissoli@GraysonWWE melos number one fan@GraysonWWE melos number one fanA user asked if the signed merchandise was for him!robert.dollaway@DollawayRobert@GraysonWWE Hey Grayson, was that for me?@GraysonWWE Hey Grayson, was that for me?Both Carmelo and Grayson are doing well with their progress on the developmental brand. Fans will have to tune in next Tuesday to see who comes out with the NXT North American Championship from the Great American Bash.