Couples who are constantly feeling the need to be touching, holding hands, kissing, and calling eachother pet names like shmoopy, as if they are forever caught in the state of being a brand new couple that is madly in love. It's from seinfeld
That is the shmoopiest couple I have ever seen. They are always eskimo kissing in front of everyone and it's awkward as hell.
Swoopsies is the defined as a max mistake, joking in a way. Similar to oopsies but on a serious scale but also for laughs. Can use in almost any situations, texting, in person conversations, pretty much anything.