Is there a name/tag for this type of gag?

Sanae is a good girl.

so... no then?

Apparently not. I too was wondering if their was a name for it but was to lazy to look it up.

Just did some searching and apparently it's a ring gag...http://farm4.static.flickr.com/3345/3572970787_c44e65eeb1.jpg for an example of a real one.