"And he drew near and rolled the stone" (Genesis 29:10) — like a man who removes the stopper from the mouth of a flask. ("And Jacob kissed Rachel" — every kiss is for frivolity except for three, and so forth, up to "And Rachel came with the sheep.")
Jacob Rolls the Well Stone as Easily as a Bottle Stopper
Yalkut Shimoni on Torah 124:2
(בראשית כט י) וַיִּגַּשׁ וַיָּגֶל אֶת הָאֶבֶן. כְּאָדָם שֶׁהוּא מַעֲבִיר אֶת הַפְּקָק מֵעַל פִּי הַצְּלוֹחִית (וַיִּשַּׁק יַעֲקֹב לְרָחֵל כָּל נְשִׁיקָה לְתִּפְלוּת בַּר מִן תְּלַת וְכוּ' עַד וְרָחֵל בָּאָה עִם הַצֹּאן).