When you are dubbling up in a bed with another guy due to a lack of available beds (ie: Hockey Trouneys) and one guy decides to cuddle the other guy while sleeping. Usually this is non consensual and could be considered a light form of man rape.
Man, T-Bone was a real Snuggle Monsterlast night. I woke up and he had his arm around me and his tongue in my ear.
A person, male or female, who excels in the arts of snuggling and cuddling. This person has natural, intrinsic instincts, and has also refined their skills over many years to seamlessly merge their warm snuggly body with another's to form one indistinguishable cozy snuggly cuddlemass
Michelle is a serious snugglemaster - she and her new dude missed the show last night because they were lost in time and space snuggled up in a state of ethereal cuddled-up bliss