Apparently, these statements used to be found regularly on bathroom walls as graffiti. It's amusing as heck, and completely off the wall, as it were. It's fitting that BOYS is right in the middle of the grid, as I'm sure it was in that particular set of restrooms that the above statements were found.
Is there a single ARREAR? I've only heard it used as "in arrears". This was one of the few entries I had to think about. On the whole, this puzzle was much too easy for a Wednesday. But I enjoyed it nonetheless. I entered AnisETTe for AMARETTO, which is wrong, but only just - it is a liqueur, after all, just licorice flavored, rather than almond. I corrected it quickly, though.
And I like CIABATTA (a fine bread), making a pair of Italian 9-letter words. My father worked at Houghton Library (alongside Frannie for a while), so RAREBOOK is welcome. SCREW and ABED are suspiciously close to each other, but neither gets a Huygens style clue (24A: Where a couple might 9A?).
36D: Deuterium and tritium (ISOTOPES) is great, and reminds me for some reason of Star Trek. Did they use one of those in the warp drives? LARRY Bird is a reminder of the good old Celtics days.
50A: Possible response to "Gonna win?" (HOPETO) is peculiar. I thought of HOPEsO first.
Downsides include WEDGIE and BONDAGE. I want neither. There are a fair number of crosswordy stuff, but I'm ignoring it. ENTR this!
1A: Parks who sparked a boycott (ROSA) is very straightforward. I give it a B.