Ha, if you’ve ever had a proper titfuck with implants that big, you won’t care about bowling or basketball size comparisons ...
I’ve had the joy of that from a Montreal stripper known for her huge knockers, multiple times.
Bring lube , tho.
With the bowling ball comment it is not the size but the hardness, they actually look like a bowling ball cut in half and rock hard, not the best for a tit fuck.