This is just simply sloe gin and Orange Juice. The "screw" probably relates to the orange juice in a similar drink, the screwdriver, that's made with vodka and orange juice.
Slow Comfortable Screw
The fruit is the sloe, which is a plum-like fruit used largely for the flavoring of alcoholic beverages, e.g., sloe gin.
It's often spelled as "Sloe Comfortable Screw". The 'sloe' is for Sloe Gin (1 part). The 'comfortable' is Southern Comfort (1 part). The 'screw' is the same 'screw' in a screwdriver, Vodka (1 part). Pour the above into a glass with ice. Top up with orange juice and garnish with an orange twist.
Drinks "up against the wall" generally refer to a drink containing Galliano. The Galliano bottle is very tall and requires somewhat sturdy storage, i.e. leaned against a wall. The drink a "Sloe Screw up against the wall" is a combination of Sloe Gin, Galliano, Southern Comfort, Vodka, and Orange juice.
sloe
Ingredients: *2 oz. Sloe gin *1 oz. Gin *1/2 teaspoon Lemon juice *Grenadine Preparation: Drop olive or cherry into cocktail glass and cover with grenadine. Mix rest of ingredients with cracked ice and strain into cocktail glass over grenadine. Do not mix.
Damsons are a type of plum, while sloes are the fruit of the blackthorn bush. Damsons are larger and juicier, often used for cooking and eating fresh, while sloes are smaller and more bitter, commonly used to make sloe gin and other alcoholic beverages.
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volcano
Sloe is the name of the fruit of the blackthorn.Specifically, blackthorn (Prunus spinosa) produces a fruit which is called "sloe" and categorized as "drupe". Drupes have fleshy exteriors surrounding a pit, pyrene, or stone and a seed. Sloes have plum-like appearances.
A homophone for "slow" is "sloe", which is a type of small, dark fruit similar to a plum.
Sloe would be a homonym for slow. Sloe is a particular fruit.