NBA的潜规则 球员不能选择69号 拉拉队员不能穿内裤（NBA不成文规矩：球员避用69号，啦啦队制服下不得穿内裤）

Clarifying NBA number rules

I need to clarify that there isn't an official NBA rule against the number 69. It's actually not prohibited, but players tend to avoid it due to its connotation. Dennis Rodman requested the number with the Mavericks in 2000 but was denied. While teams can decline numbers deemed inappropriate, no NBA player has worn 69 in a regular season. Historically, the league has retired certain numbers, such as Bill Russell's #6, but 69 remains available.Explaining cheerleader uniform guidelines

Regarding the claim that "cheerleaders can't wear underwear," that's inaccurate. Teams have uniform guidelines that often include wearing flesh-colored tights and dance briefs beneath their skirts. It's more precise to say they wear dance briefs and tights. Wardrobe malfunctions are typically addressed this way. Various leagues have rules about attire, but there’s no official prohibition on underwear. Some dancers opt for seamless garments to avoid visible lines. It's important to clear up this myth and provide proper context.Adding context on retired numbers

I should include a brief note about the timeline regarding Bill Russell's #6 jersey being retired; however, this isn't connected to the number 69 discussion. It's important to clarify that while some numbers are retired for specific players, like Russell's, this doesn't imply any official ban on other numbers like 69. I want to make sure this context is included for clarity and to avoid any confusion. Let's incorporate that smoothly into the final response!