Similar to a dingle-berry, a crusty cling-on is a dried up piece of poo that gets caught up in an unkempt and unwashed hairy ass of a man. Or a woman that has a hairy ass, though that's more of a rarity.
Dude I used a whole roll of toilet paper after the dump I left in the can last night but still got crusty cling-ons hanging off my ring beard!
To have a crush on someone you see daily in the hallway/ at school but they don't have any classes with you or haven't even had a conversation with you; you have no means to communicate/ you try to but fail
A Crusty Balloon is when one jizzes on their sexual partner’s breasts if female, testicles if male; Following the act of ejaculation the partner proceeds to let the semen air dry. Once the cum is dry and flaky, if ejaculate can be removed from vigorous punches to the breasts, crusty balloons have been achieved.