Yeah just go like
"Hello everyone, we are gathered here today to join the hands of two great imgflippers in marriage" or something of the sort, and I mean, you can add stuff special if you want or don't
Then have them say vows like "Now let us begin vows. blacklisted, will you begin?"
then he'd say his vows and whatever
then be like, "and now halfwhitmemes will say her vows" and then she'd say her vows
If they don't know what they are??? Uhh...I'll cover that in a minute
after that just be like "halfwhitmemes, do you take this man to be your lawfully wedded imgflip husband?" ["I do"] "and blacklisted, do you take this woman to be your lawfully wedded imgflip wife?" ["I do"]
"Through the power vested in me, I now declare you imgflip husband and imgflip wife! You may now kiss the bride!"