That's a relay race with a bouquet,
At the end of a running race, the winner is often presented with a bouquet of flowers. Kendrick is the uncontested champion.
This also references this practice of a bride throwing a bouquet to her unmarried friends at a wedding. The one who catches the bouquet will supposedly be the next to get married. All the girls want to catch the bouquet with Kendrick in mind as their future groom. He might also be suggesting that whenever he aims to pick up a “ho” he always scores, thus wins the metaphorical race with the bouquet (sex) as a final reward each time.
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