This compound subject, therefore, requires a singular verb to agree with it. SUBJECT-VERB RULE #2 Two or more SINGULAR subjects joined by or (or nor) act as a singular compound subject and, therefore, take a singular verb to agree.
For example, You can't help but see how he feels about her; he wears his heart on his sleeve. Shakespeare had it in Othello (1:1): But I will wear my heart upon my sleeve for daws to peck at. People who wear their heart on their sleeve express their emotions freely and openly, for all to see.
Professional wrestler CM Punk showing his sleeve tattoos, which cover his shoulder to his wrist. A sleeve tattoo (or tattoo sleeve) is a large tattoo, or a collection of smaller tattoos, usually themed in similar manner, that covers most or all of a person's arm, usually from shoulder to wrist.