Here are some examples:
* Obtrusive advertising: Ads that are loud, flashy, or interrupt your online experience.
* Obtrusive clothing: Clothing that is too tight, revealing, or otherwise draws unwanted attention.
* Obtrusive behavior: Being overly talkative, interrupting others, or dominating a conversation.
* Obtrusive design: A website or building that has too many distracting elements.
The opposite of "obtrusive" is unobtrusive, which means something that is subtle, discreet, and blends in.