Reverse tittyfucking can work really well if the girl you're doing it with has a large enough pair of boobs - if she does you can push them towards her chin, that way you can tittyfuck her while she sucks on your balls, it's like combining a tittyfuck with a blow job, it'll make you cum hard.
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Elagabalus666
Did this earlier with my gf, feels amazing best position for it