User blog comment:TheNightNews/That Moment You ALL Missed In TMNT Season 1/@comment-995426-20160524034120

That was an easter egg, but maybe not the one you think. Dogpound said "oh yeah!" and broke through the wall, like in various Kool-Aid commercials. As for the F-bomb, you'll have to provide another timestamp, because I'm not hearing it.

Besides, it's not like TMNT has never been mature before. It was never originally actually for children. Hollywood just has a bad habit of always adapting it primarily for children. Whether expletives are dropped or just @#$%ed out, here are some scenes you may have missed: