How do the British say booger?
Bits of fairly dry nasal mucus (you know what I mean) are colloquially called bogies (or bogeys) in BrE and boogers in AmE. The first vowel in the AmE version is generally pronounced like the oo in book.
Can you say boogers?
Well, if the entire Internet is any indication… the answer is “no”. There is no cool scientific word for “booger”. The closest we can come to official terminology is “dried nasal mucus,” a bit of boring, wordy nomenclature that is touted as official by the likes of Merriam-Webster.