Another trope very common in British Comics
(especially humour ones like The Beano
) is when characters from a comic read their own comic. This could overlap with some breaking the fourth wall tropes but it is used frequently and is more specific. A common gag in these comics is a characters parent trying to read this weeks issue of the comic (the character stars in) before their child does.
Doesnt have to just be about reading your own comic, could also be watching your own show or playing your own game but I cant think of any examples of that.